package Course_Codes;

import java.util.Scanner;

public class n的约数的个数 {

	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		while(sc.hasNext()) {
			int n=sc.nextInt();
			int ans=-0;
			for(int i=1;i*i<=n;i++) {
				if(i*i==n)
					ans++;
				else 
					ans+=2;
			}
			System.out.print(ans);
		}
		
	}

}