import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {

	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		int count=0;

		StringTokenizer st1 = new StringTokenizer(br.readLine());
		int a=Integer.parseInt(st1.nextToken());
		int b=Integer.parseInt(st1.nextToken());
		int c=Integer.parseInt(st1.nextToken());
		if(c%a==0){
			count++;
		}
		a++;

		while(a<=b){
			if(c%a==0){
				count++;
			}
			a++;
		}

		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