public class Prime_facto {

    public static void main(String[] args) {
            int number = 210;
            int divide = 2;
            String result = "";
            System.out.print(number + " ");

            while (number > 1) {
                if(number % divide == 0) {
                    result += (number==divide ? divide : divide + " x ");
                    number /= divide;
                } else {
                    divide++;
                }
            }

            System.out.println("소인수 분해 결과 : " + result);
    }

}