Java :

import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
		int a = input.nextInt();
		int sum = 0;
		for (int i = 1; i <= a; i++) {
			for (int z = 1; z < i; z++) {
				if (i % z == 0)
					sum = sum + z;
			}
			if (sum == i)
				System.out.print(i + " ");
			sum = 0;
		}
	}
}