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

class Main{
    public static void main(String[] args){
    Scanner scan = new Scanner(System.in);

    int number = 0;
    int a = scan.nextInt();
    int b = scan.nextInt();
    int c = scan.nextInt();

    for(int i = a;i <= b;i++){
        if(c % i == 0){
        number = number + 1;
        }
    }

    System.out.println(number);
    }
}
/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