java 求100以内的完数

public class demo4 {

    public static void main(String[] args) {
        // TODO Auto-gen·erated method stub
        int i=1;
        int j;
        int s1;
        while(i<=100){
            j=1;
            s1=0;
            while(j<i){
                if(i%j==0){
                s1=s1+j;    
                }
                
                j++;
                
            }
            if(s1==i){
                System.out.println(i+"是完全数");
            }
            
            i++;
        }
    }

}