Simple java program- Amicable numbers to print pairs

I am trying to write a program that prints the amicable pairs (i,j) for n values, the command line arg and here is my code:

public class AmicablePairs { public static void main(String[] args) {

   int n=Integer.parseInt(args[0]);
   int sum = 0;
for (int i=1; i<=n; i++)
{
    if (n%i == 0)
    {
        sum += i;
        System.out.print("("+i);

    }
}  
for(int j =1;j<=n;j++)
{ if ( sum%j ==0)
    { sum+=j ; }
    System.out.println(","+j+")");

} }

}

The solution should come to this: n being 3000

(220 , 284)

(1184 , 1210)

(2620 , 2924)

But I am not getting this, I get :

(1(2(4(5(10(20(25(50(100,1)

,2)

,3)

,4)

,5)

etc.until

,100)

I have tried this for a while now and I am not getting the right answer. Please help me understand where I am going wrong, I'm new to coding . I looked at other relateable questions and they are a little different.