import java.util.Scanner;
import java.io.*;

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

/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