perfect number!

perfect_number.rb

def perfect_number? number
  return number == divisors_of(number)
end

def divisors_of number 
  arr = []
  (1..number).each do |iter|
    if number % iter == 0
      arr << iter
    end
  end
  arr
end

def sum array
  sum = 0
  for elem in array do 
    sum += elem
  end
  sum
end

def perfect_numbers_in low, high
  arr = []
  (low..high).each do |iter|
    if perfect_number? iter
      arr << iter
    end
  end
  arr
end

p perfect_numbers_in 1, 1000