题解 | #质数因子#

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        long num = scanner.nextLong();
        for (long i = 2; i * i <= num; i++) {
            while (num % i == 0) {
                num /= i;
                System.out.print(i + " ");
            }
        }
        if (num != 1) {
                System.out.println(num);
        }
    }
}