import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.lang.Math;

public class Main {
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder st = new StringBuilder();
        
        String[] ary = new String[3];
        int count = 0;
        
        ary = br.readLine().split(" ");
        int a = Integer.parseInt(ary[0]);
        int b = Integer.parseInt(ary[1]);
        int c = Integer.parseInt(ary[2]);
        
        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