题解 | #质数因子#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        // 处理输入
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            // 获取需要求解的值
            double num = Double.parseDouble(sc.next());
            double num2 = Math.sqrt(num);
            for (int i = 2; i <= num2 + 1;) {
                if (num % i == 0) {
                    System.out.print(i + " ");
                    num /= i;
                }else{
                    i++;
                    if(i > num || i > num2){
                        if(num != 1) System.out.print((int)num + " ");
                        break;
                    }
                }
            }
        }
    }
}