import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String line = br.readLine();
        String[] line_ = line.split(" ");
        Integer i1 = Integer.valueOf(line_[0]);
        Integer i2 = Integer.valueOf(line_[1]);
        Integer i3 = Integer.valueOf(line_[2]);
        int counter = 0;
        for(int a = i1 ; a <= i2 ; a++ ) {
            if(i3 % a == 0)
            counter++;
        }
        System.out.println(counter);
    }
}
/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