Determining perfect numbers from 1 - 1000

I need to make a code where it determines the perfect numbers within 1 - 1000, and also displaying their factors to prove that they are perfect numbers. Can anyone please help me?

I've been looking up for clues and find myself in circles with this code I also searched for, which I also used as my basis:

function num = is_perfect(n)
 i = 1;
factorsum = 0;
while i<= n-1
  if rem(n,i) == 0
      factorsum = factorsum + i;
  end
  i = i +1;
end
if n == factorsum
  num = true;
else 
  num = false;
end
end

But apparently this doesn't answer the problem I have. I'm still trying to alter the code according to the given problem.

Thank you!

[Rik]

It seems to work just fine when I test it. It matches the list on Wikipedia.

What is your question?