import java.util.Scanner;

public class Main {
	public static void main(String[] age){
		Scanner G = new Scanner(System.in);
		String imput = G.nextLine();
		String[] arrayimput = imput.split(" ");
		int a = Integer.parseInt(arrayimput[0]);
		int b= Integer.parseInt(arrayimput[1]);
		int c = Integer.parseInt(arrayimput[2]);
		int i, j=0;
		for( i=1 ; i<=c ; i++){
			if( a<=i & b>=i & c%i==0 ){
				j++;
			}
		}
		System.out.println(j);
	}
}
/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