import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		 Scanner scan = new Scanner(System.in);

//???????????´??° a???b???c ??????????????????a ?????? b ?????§?????´??°?????????
//c ????´???°?????????????????????????±???????????????°????????????????????????????????????

	            int a = Integer.parseInt(scan.next());
	            int b = Integer.parseInt(scan.next());
	            int c = Integer.parseInt(scan.next());


	            int num = a ; //?¨??????¨
	            int count = 0; //count??????????????????

//a-b a???????????????????¶??????????

	            for (int i = a; i <= b ;i++){
	            	if(c % i == 0){
	            		num++;
	            		count++;
	            	}
	            }

	            //???????????????????????°????¨???°
	            System.out.println(count);
	}

} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		 Scanner scan = new Scanner(System.in);

//???????????´??° a???b???c ??????????????????a ?????? b ?????§?????´??°?????????
//c ????´???°?????????????????????????±???????????????°????????????????????????????????????

	            int a = Integer.parseInt(scan.next());
	            int b = Integer.parseInt(scan.next());
	            int c = Integer.parseInt(scan.next());


	            int num = a ; //?¨??????¨
	            int count = 0; //count??????????????????

//a-b a???????????????????¶??????????

	            for (int i = a; i <= b ;i++){
	            	if(c % i == 0){
	            		num++;
	            		count++;
	            	}
	            }

	            //???????????????????????°????¨???°
	            System.out.println(count);
	}

} Main public static void main(String[] args) {
		 Scanner scan = new Scanner(System.in);

//???????????´??° a???b???c ??????????????????a ?????? b ?????§?????´??°?????????
//c ????´???°?????????????????????????±???????????????°????????????????????????????????????

	            int a = Integer.parseInt(scan.next());
	            int b = Integer.parseInt(scan.next());
	            int c = Integer.parseInt(scan.next());


	            int num = a ; //?¨??????¨
	            int count = 0; //count??????????????????

//a-b a???????????????????¶??????????

	            for (int i = a; i <= b ;i++){
	            	if(c % i == 0){
	            		num++;
	            		count++;
	            	}
	            }

	            //???????????????????????°????¨???°
	            System.out.println(count);
	} main {
		 Scanner scan = new Scanner(System.in);

//???????????´??° a???b???c ??????????????????a ?????? b ?????§?????´??°?????????
//c ????´???°?????????????????????????±???????????????°????????????????????????????????????

	            int a = Integer.parseInt(scan.next());
	            int b = Integer.parseInt(scan.next());
	            int c = Integer.parseInt(scan.next());


	            int num = a ; //?¨??????¨
	            int count = 0; //count??????????????????

//a-b a???????????????????¶??????????

	            for (int i = a; i <= b ;i++){
	            	if(c % i == 0){
	            		num++;
	            		count++;
	            	}
	            }

	            //???????????????????????°????¨???°
	            System.out.println(count);
	} Scanner scan = new Scanner(System.in); scan new Scanner(System.in) int a = Integer.parseInt(scan.next()); a Integer.parseInt(scan.next()) Integer.parseInt Integer scan.next() scan.next scan int b = Integer.parseInt(scan.next()); b Integer.parseInt(scan.next()) Integer.parseInt Integer scan.next() scan.next scan int c = Integer.parseInt(scan.next()); c Integer.parseInt(scan.next()) Integer.parseInt Integer scan.next() scan.next scan int num = a ; num a int count = 0; count 0 for (int i = a; i <= b ;i++){
	            	if(c % i == 0){
	            		num++;
	            		count++;
	            	}
	            } int i = a; int i = a; i a i <= b i b i++ i++ i {
	            	if(c % i == 0){
	            		num++;
	            		count++;
	            	}
	            } {
	            	if(c % i == 0){
	            		num++;
	            		count++;
	            	}
	            } if(c % i == 0){
	            		num++;
	            		count++;
	            	} c % i == 0 c % i c i 0 {
	            		num++;
	            		count++;
	            	} num++ num count++ count System.out.println(count) System.out.println System.out System System.out count String[] args args public class Main {

	public static void main(String[] args) {
		 Scanner scan = new Scanner(System.in);

//???????????´??° a???b???c ??????????????????a ?????? b ?????§?????´??°?????????
//c ????´???°?????????????????????????±???????????????°????????????????????????????????????

	            int a = Integer.parseInt(scan.next());
	            int b = Integer.parseInt(scan.next());
	            int c = Integer.parseInt(scan.next());


	            int num = a ; //?¨??????¨
	            int count = 0; //count??????????????????

//a-b a???????????????????¶??????????

	            for (int i = a; i <= b ;i++){
	            	if(c % i == 0){
	            		num++;
	            		count++;
	            	}
	            }

	            //???????????????????????°????¨???°
	            System.out.println(count);
	}

} public class Main {

	public static void main(String[] args) {
		 Scanner scan = new Scanner(System.in);

//???????????´??° a???b???c ??????????????????a ?????? b ?????§?????´??°?????????
//c ????´???°?????????????????????????±???????????????°????????????????????????????????????

	            int a = Integer.parseInt(scan.next());
	            int b = Integer.parseInt(scan.next());
	            int c = Integer.parseInt(scan.next());


	            int num = a ; //?¨??????¨
	            int count = 0; //count??????????????????

//a-b a???????????????????¶??????????

	            for (int i = a; i <= b ;i++){
	            	if(c % i == 0){
	            		num++;
	            		count++;
	            	}
	            }

	            //???????????????????????°????¨???°
	            System.out.println(count);
	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		 Scanner scan = new Scanner(System.in);

//???????????´??° a???b???c ??????????????????a ?????? b ?????§?????´??°?????????
//c ????´???°?????????????????????????±???????????????°????????????????????????????????????

	            int a = Integer.parseInt(scan.next());
	            int b = Integer.parseInt(scan.next());
	            int c = Integer.parseInt(scan.next());


	            int num = a ; //?¨??????¨
	            int count = 0; //count??????????????????

//a-b a???????????????????¶??????????

	            for (int i = a; i <= b ;i++){
	            	if(c % i == 0){
	            		num++;
	            		count++;
	            	}
	            }

	            //???????????????????????°????¨???°
	            System.out.println(count);
	}

}