质数因子

import java.util.*;

public class Main 
{
    public Main() 
    {
        Scanner in = new Scanner(System.in);
        while (in.hasNextLong()) {
            long n = in.nextLong();
            StringBuilder output = new StringBuilder();
            for (int i = 2; i <= n; i++) {
                while (n % i == 0) {
                    output.append(i).append(" ");
                    n /= i;
                }
            }
            System.out.println(output);
       }
    }

    public static void main(String[] args) 
    {
        Main solution = new Main();
    }
}