/**
* @param args
*/
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("请输入1-100000要分解的数：");
int num = sc.nextInt();
int tempNum = num;
StringBuffer sb = new StringBuffer();
for (int i = 2; i <= num; i++) {
// num能被i整除的话，就一直除，指导不可以再加1
while (num % i == 0) {
sb.append(i).append("X");
num /= i;
}