import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int min = sc.nextInt();
		int max = sc.nextInt();
		int divide = sc.nextInt();
		sc.close();

		int count = 0;
		for(int i=min; i<=max; i++) {
			if(divide % 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