题解 | #质数因子#

    public static void main(String[] args) throws IOException{
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        int num = Integer.parseInt(reader.readLine());
        resolve(num);
    }

    private static void resolve(int num){
        int i = 2, n = (int)Math.sqrt(num);
        while(i <= n){
            if(num % i == 0){
                System.out.print(i + " ");
                num /= i;
            }else{
                i++;
            }
        }
        if(num != 1){
            System.out.print(num+" ");
        }
    }