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);
        long num = in.nextLong();
        sysNumber(num);
    }
    public static void sysNumber(long s){
        for(int i=2;i<=Math.sqrt(s);i++){
            if(s%i==0){
                System.out.print(i+" ");
                sysNumber(s/i);
                break;
            }
            if(i==(int)Math.sqrt(s)){
                 System.out.print(s+" ");
            }
            
        }
    }
}