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 in = new Scanner(System.in);
        int number = in.nextInt();
        while (number % 2 == 0) {
            System.out.print("2 ");
            number /= 2;
        }

        for (int i = 3; i < number; i += 2) {
            while (number % i == 0) {
                System.out.print(i + " ");
                number /= i;
            }
        }
        if (number > 2) {
            System.out.println(number);
        }
    }
}