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

public class Main{
    public static void main(String[] args){
        int count=0;
        Scanner sc = new Scanner(System.in);
        int a= sc.nextInt();
        int b=sc.nextInt();
        int c=sc.nextInt();
        for(int 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