import java.util.Scanner;

public class Main{
	public static void main(String[] args){
		Scanner scan=new Scanner(System.in);
		
		int a=scan.nextInt();
		int b=scan.nextInt();
		int c=scan.nextInt();
		int counter=0;
		
		for(int i=a;i<=b;i++){
			if(c%i==0){
				counter++;
			}
		}
		System.out.println(counter);
		scan.close();
	}
} import java.util.Scanner; Scanner java.util public class Main{
	public static void main(String[] args){
		Scanner scan=new Scanner(System.in);
		
		int a=scan.nextInt();
		int b=scan.nextInt();
		int c=scan.nextInt();
		int counter=0;
		
		for(int i=a;i<=b;i++){
			if(c%i==0){
				counter++;
			}
		}
		System.out.println(counter);
		scan.close();
	}
} Main public static void main(String[] args){
		Scanner scan=new Scanner(System.in);
		
		int a=scan.nextInt();
		int b=scan.nextInt();
		int c=scan.nextInt();
		int counter=0;
		
		for(int i=a;i<=b;i++){
			if(c%i==0){
				counter++;
			}
		}
		System.out.println(counter);
		scan.close();
	} main {
		Scanner scan=new Scanner(System.in);
		
		int a=scan.nextInt();
		int b=scan.nextInt();
		int c=scan.nextInt();
		int counter=0;
		
		for(int i=a;i<=b;i++){
			if(c%i==0){
				counter++;
			}
		}
		System.out.println(counter);
		scan.close();
	} Scanner scan=new Scanner(System.in); scan new Scanner(System.in) int a=scan.nextInt(); a scan.nextInt() scan.nextInt scan int b=scan.nextInt(); b scan.nextInt() scan.nextInt scan int c=scan.nextInt(); c scan.nextInt() scan.nextInt scan int counter=0; counter 0 for(int i=a;i<=b;i++){
			if(c%i==0){
				counter++;
			}
		} int i=a; int i=a; i a i<=b i b i++ i++ i {
			if(c%i==0){
				counter++;
			}
		} {
			if(c%i==0){
				counter++;
			}
		} if(c%i==0){
				counter++;
			} c%i==0 c%i c i 0 {
				counter++;
			} counter++ counter System.out.println(counter) System.out.println System.out System System.out counter scan.close() scan.close scan String[] args args public class Main{
	public static void main(String[] args){
		Scanner scan=new Scanner(System.in);
		
		int a=scan.nextInt();
		int b=scan.nextInt();
		int c=scan.nextInt();
		int counter=0;
		
		for(int i=a;i<=b;i++){
			if(c%i==0){
				counter++;
			}
		}
		System.out.println(counter);
		scan.close();
	}
} public class Main{
	public static void main(String[] args){
		Scanner scan=new Scanner(System.in);
		
		int a=scan.nextInt();
		int b=scan.nextInt();
		int c=scan.nextInt();
		int counter=0;
		
		for(int i=a;i<=b;i++){
			if(c%i==0){
				counter++;
			}
		}
		System.out.println(counter);
		scan.close();
	}
} Main
import java.util.Scanner;

public class Main{
	public static void main(String[] args){
		Scanner scan=new Scanner(System.in);
		
		int a=scan.nextInt();
		int b=scan.nextInt();
		int c=scan.nextInt();
		int counter=0;
		
		for(int i=a;i<=b;i++){
			if(c%i==0){
				counter++;
			}
		}
		System.out.println(counter);
		scan.close();
	}
}