[백준] 8320 : 직사각형을 만드는 방법 -JAVA - 사좋배 공유

import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
		Scanner sc= new Scanner(System.in);
		
		int number =sc.nextInt();
		
		int count=0;
		for(int i=1;i<=number;i++) {
			for(int j=i;j*i<=number;j++) {
				count++;
			}
		}
		System.out.println(count);

	}

}