质数因子分解

 

import java.io.*;

import java.util.*;

public class Main {

public static void main(String[] args)throws IOException {

BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));

String st = bf.readLine();

int num = Integer.parseInt(st);

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.print(num + " ");

}

}

}