import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int a = Integer.parseInt(scan.next());
		int b = Integer.parseInt(scan.next());
		int c = Integer.parseInt(scan.next());
		scan.close();
		int count=0;	
		for(int i=1;i<=c;i++){
			if(c%i==0)
				if(i>=a&&i<=b)
					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);
		int a = Integer.parseInt(scan.next());
		int b = Integer.parseInt(scan.next());
		int c = Integer.parseInt(scan.next());
		scan.close();
		int count=0;	
		for(int i=1;i<=c;i++){
			if(c%i==0)
				if(i>=a&&i<=b)
					count++;
		}
		System.out.println(count);
		
	}

} Main public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int a = Integer.parseInt(scan.next());
		int b = Integer.parseInt(scan.next());
		int c = Integer.parseInt(scan.next());
		scan.close();
		int count=0;	
		for(int i=1;i<=c;i++){
			if(c%i==0)
				if(i>=a&&i<=b)
					count++;
		}
		System.out.println(count);
		
	} main {
		Scanner scan = new Scanner(System.in);
		int a = Integer.parseInt(scan.next());
		int b = Integer.parseInt(scan.next());
		int c = Integer.parseInt(scan.next());
		scan.close();
		int count=0;	
		for(int i=1;i<=c;i++){
			if(c%i==0)
				if(i>=a&&i<=b)
					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 scan.close() scan.close scan int count=0; count 0 for(int i=1;i<=c;i++){
			if(c%i==0)
				if(i>=a&&i<=b)
					count++;
		} int i=1; int i=1; i 1 i<=c i c i++ i++ i {
			if(c%i==0)
				if(i>=a&&i<=b)
					count++;
		} {
			if(c%i==0)
				if(i>=a&&i<=b)
					count++;
		} if(c%i==0)
				if(i>=a&&i<=b)
					count++; c%i==0 c%i c i 0 if(i>=a&&i<=b)
					count++; i>=a&&i<=b i>=a i a i<=b i b 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);
		int a = Integer.parseInt(scan.next());
		int b = Integer.parseInt(scan.next());
		int c = Integer.parseInt(scan.next());
		scan.close();
		int count=0;	
		for(int i=1;i<=c;i++){
			if(c%i==0)
				if(i>=a&&i<=b)
					count++;
		}
		System.out.println(count);
		
	}

} public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int a = Integer.parseInt(scan.next());
		int b = Integer.parseInt(scan.next());
		int c = Integer.parseInt(scan.next());
		scan.close();
		int count=0;	
		for(int i=1;i<=c;i++){
			if(c%i==0)
				if(i>=a&&i<=b)
					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);
		int a = Integer.parseInt(scan.next());
		int b = Integer.parseInt(scan.next());
		int c = Integer.parseInt(scan.next());
		scan.close();
		int count=0;	
		for(int i=1;i<=c;i++){
			if(c%i==0)
				if(i>=a&&i<=b)
					count++;
		}
		System.out.println(count);
		
	}

}