import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int div;
		int cnt = 0;

		for(div = a; div <= b; div++) {

			if(c%div == 0){

				cnt++;

			} else {}
		}
		System.out.println(cnt);
		sc.close();
	}

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

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int div;
		int cnt = 0;

		for(div = a; div <= b; div++) {

			if(c%div == 0){

				cnt++;

			} else {}
		}
		System.out.println(cnt);
		sc.close();
	}

} Main public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int div;
		int cnt = 0;

		for(div = a; div <= b; div++) {

			if(c%div == 0){

				cnt++;

			} else {}
		}
		System.out.println(cnt);
		sc.close();
	} main {

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int div;
		int cnt = 0;

		for(div = a; div <= b; div++) {

			if(c%div == 0){

				cnt++;

			} else {}
		}
		System.out.println(cnt);
		sc.close();
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int c = sc.nextInt(); c sc.nextInt() sc.nextInt sc int div; div int cnt = 0; cnt 0 for(div = a; div <= b; div++) {

			if(c%div == 0){

				cnt++;

			} else {}
		} div = a; div = a div a div <= b div b div++ div++ div {

			if(c%div == 0){

				cnt++;

			} else {}
		} {

			if(c%div == 0){

				cnt++;

			} else {}
		} if(c%div == 0){

				cnt++;

			} else {} c%div == 0 c%div c div 0 {

				cnt++;

			} cnt++ cnt {} System.out.println(cnt) System.out.println System.out System System.out cnt sc.close() sc.close sc String[] args args public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int div;
		int cnt = 0;

		for(div = a; div <= b; div++) {

			if(c%div == 0){

				cnt++;

			} else {}
		}
		System.out.println(cnt);
		sc.close();
	}

} public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int div;
		int cnt = 0;

		for(div = a; div <= b; div++) {

			if(c%div == 0){

				cnt++;

			} else {}
		}
		System.out.println(cnt);
		sc.close();
	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int div;
		int cnt = 0;

		for(div = a; div <= b; div++) {

			if(c%div == 0){

				cnt++;

			} else {}
		}
		System.out.println(cnt);
		sc.close();
	}

}