题解 | #质数因子#

import java.util.*;

// 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);
        int num = sc.nextInt();

        int a = 0;
        for (int i = 2; i <= Math.sqrt(num); i++) {
            while(num%i==0){
                System.out.print(i+" ");
                num=num/i;
            }

        }
        if(num!=1){
            System.out.println(num);
        }
        
    }
}