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 kaisu = 0;
		for (; a <= b; a++) {
			if (c % a == 0)
				kaisu += 1;
		}
		System.out.println(kaisu);
		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 kaisu = 0;
		for (; a <= b; a++) {
			if (c % a == 0)
				kaisu += 1;
		}
		System.out.println(kaisu);
		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 kaisu = 0;
		for (; a <= b; a++) {
			if (c % a == 0)
				kaisu += 1;
		}
		System.out.println(kaisu);
		sc.close();
	} main {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int kaisu = 0;
		for (; a <= b; a++) {
			if (c % a == 0)
				kaisu += 1;
		}
		System.out.println(kaisu);
		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 kaisu = 0; kaisu 0 for (; a <= b; a++) {
			if (c % a == 0)
				kaisu += 1;
		} ; a <= b a b a++ a++ a {
			if (c % a == 0)
				kaisu += 1;
		} {
			if (c % a == 0)
				kaisu += 1;
		} if (c % a == 0)
				kaisu += 1; c % a == 0 c % a c a 0 kaisu += 1 kaisu 1 System.out.println(kaisu) System.out.println System.out System System.out kaisu 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 kaisu = 0;
		for (; a <= b; a++) {
			if (c % a == 0)
				kaisu += 1;
		}
		System.out.println(kaisu);
		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 kaisu = 0;
		for (; a <= b; a++) {
			if (c % a == 0)
				kaisu += 1;
		}
		System.out.println(kaisu);
		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 kaisu = 0;
		for (; a <= b; a++) {
			if (c % a == 0)
				kaisu += 1;
		}
		System.out.println(kaisu);
		sc.close();
	}
}

