
import java.util.Scanner;

public class Main {
	public static void main(String[] args){
	    Scanner std = new Scanner(System.in);
	    int a = Integer.parseInt(std.next());
	    int b = Integer.parseInt(std.next());
	    int c = Integer.parseInt(std.next());
	    int divisor = 0;
	    for(int n = a; n <= b; n++ ){
	    	if(c%n==0){divisor++;}
	    }
	    System.out.println(divisor);
	}
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz