如180的質(zhì)數(shù)因子為22335？

import java.util.*;

public class Main {

public static void main(String[] args) {

Scanner str = new Scanner(System.in);

long num = str.nextLong();

String result = getResult(num);

System.out.println(result);

}

public static String getResult(long num){

int pum = 2;

String result = "";

while(num != 1){

while(num%pum == 0){

num = num/pum;

result = result + pum + " ";

}

pum++;

}

return result;

}

}