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

class Main{
    public static void main(String[] args) throws IOException{
        BufferedReader r =
         new BufferedReader(new InputStreamReader(System.in));       
        String line = r.readLine();       
        
        int cnt=0;

        String st[] = line.split(" ",0);
        int a = Integer.parseInt(st[0]);
        int b = Integer.parseInt(st[1]);
        int c = Integer.parseInt(st[2]);

        for(int i = a ; i <=b ; i++){
            if (c % i == 0) cnt++;
        }
        System.out.println(cnt);         
    }
}
/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