import java.util.Scanner;

class Main {

	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		boolean bl = true;
		int a=0,b=0,c=0;
		int count = 0;

		while(bl){
			a = stdIn.nextInt();
			b = stdIn.nextInt();
			c = stdIn.nextInt();

			if((a >= 1 && a <= 10000) && (b >= 1 && b <= 10000) && (c >= 1 && c <= 10000) && (a <= b)){
				break;
			}
		}
		while(a <= b){
			if(c % a == 0){
				count++;
			}
			a++;
		}
		System.out.println(count);
	}
} import java.util.Scanner; Scanner java.util class Main {

	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		boolean bl = true;
		int a=0,b=0,c=0;
		int count = 0;

		while(bl){
			a = stdIn.nextInt();
			b = stdIn.nextInt();
			c = stdIn.nextInt();

			if((a >= 1 && a <= 10000) && (b >= 1 && b <= 10000) && (c >= 1 && c <= 10000) && (a <= b)){
				break;
			}
		}
		while(a <= b){
			if(c % a == 0){
				count++;
			}
			a++;
		}
		System.out.println(count);
	}
} Main public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		boolean bl = true;
		int a=0,b=0,c=0;
		int count = 0;

		while(bl){
			a = stdIn.nextInt();
			b = stdIn.nextInt();
			c = stdIn.nextInt();

			if((a >= 1 && a <= 10000) && (b >= 1 && b <= 10000) && (c >= 1 && c <= 10000) && (a <= b)){
				break;
			}
		}
		while(a <= b){
			if(c % a == 0){
				count++;
			}
			a++;
		}
		System.out.println(count);
	} main {
		Scanner stdIn = new Scanner(System.in);
		boolean bl = true;
		int a=0,b=0,c=0;
		int count = 0;

		while(bl){
			a = stdIn.nextInt();
			b = stdIn.nextInt();
			c = stdIn.nextInt();

			if((a >= 1 && a <= 10000) && (b >= 1 && b <= 10000) && (c >= 1 && c <= 10000) && (a <= b)){
				break;
			}
		}
		while(a <= b){
			if(c % a == 0){
				count++;
			}
			a++;
		}
		System.out.println(count);
	} Scanner stdIn = new Scanner(System.in); stdIn new Scanner(System.in) boolean bl = true; bl true int a=0 a 0 b=0 b 0 c=0; c 0 int count = 0; count 0 while(bl){
			a = stdIn.nextInt();
			b = stdIn.nextInt();
			c = stdIn.nextInt();

			if((a >= 1 && a <= 10000) && (b >= 1 && b <= 10000) && (c >= 1 && c <= 10000) && (a <= b)){
				break;
			}
		} bl {
			a = stdIn.nextInt();
			b = stdIn.nextInt();
			c = stdIn.nextInt();

			if((a >= 1 && a <= 10000) && (b >= 1 && b <= 10000) && (c >= 1 && c <= 10000) && (a <= b)){
				break;
			}
		} a = stdIn.nextInt() a stdIn.nextInt() stdIn.nextInt stdIn b = stdIn.nextInt() b stdIn.nextInt() stdIn.nextInt stdIn c = stdIn.nextInt() c stdIn.nextInt() stdIn.nextInt stdIn if((a >= 1 && a <= 10000) && (b >= 1 && b <= 10000) && (c >= 1 && c <= 10000) && (a <= b)){
				break;
			} (a >= 1 && a <= 10000) && (b >= 1 && b <= 10000) && (c >= 1 && c <= 10000) && (a <= b) (c >= 1 && c <= 10000) (a >= 1 && a <= 10000) && (b >= 1 && b <= 10000) && (c >= 1 && c <= 10000) && (a <= b) (a >= 1 && a <= 10000) a >= 1 a 1 a <= 10000 a 10000 (b >= 1 && b <= 10000) b >= 1 b 1 b <= 10000 b 10000 (c >= 1 && c <= 10000) c >= 1 c 1 c <= 10000 c 10000 (a <= b) a b {
				break;
			} break; while(a <= b){
			if(c % a == 0){
				count++;
			}
			a++;
		} a <= b a b {
			if(c % a == 0){
				count++;
			}
			a++;
		} if(c % a == 0){
				count++;
			} c % a == 0 c % a c a 0 {
				count++;
			} count++ count a++ a System.out.println(count) System.out.println System.out System System.out count String[] args args
import java.util.Scanner;

class Main {

	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		boolean bl = true;
		int a=0,b=0,c=0;
		int count = 0;

		while(bl){
			a = stdIn.nextInt();
			b = stdIn.nextInt();
			c = stdIn.nextInt();

			if((a >= 1 && a <= 10000) && (b >= 1 && b <= 10000) && (c >= 1 && c <= 10000) && (a <= b)){
				break;
			}
		}
		while(a <= b){
			if(c % a == 0){
				count++;
			}
			a++;
		}
		System.out.println(count);
	}
}