
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		int a, b, c, cnt = 0, x;
		Scanner sc = new Scanner(System.in);
		a = sc.nextInt();
		b = sc.nextInt();
		c = sc.nextInt();
		for(x = a; x <= b; x++){
			if(c % x == 0)
				cnt++;
			else if(c / x >= 0)
				a = b;
		}
		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