题解 | #质数因子#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
               Scanner sc = new Scanner(System.in);
        long l = sc.nextLong();
        long sqrt = (long) Math.sqrt(l);
        for (int i = 2; i <= sqrt; i++) {
            while (l % i == 0) {
                System.out.print(i + " ");
                l /= i;
            }
        }
        System.out.println(l == 1 ? "" : l);
    }
    
}