import java.util.*;import java.math.*;public class Test1 { public static void main(String[]args){ System.out.println("請輸入一個整數(shù)"); Scanner sc=new Scanner(System.in); int x=sc.nextInt(); for(int i=2;i<=x/2;i++){ for(int j=2;j<Math.sqrt(i);j++) if(i%j==0){ break;} else{ if(x%i==0){ System.out.print(i+"*"); x=x/i; } } } System.out.println(x); System.exit(0); }}