amicable numbers

amicable.rb

# https://www.jdoodle.com/execute-ruby-online/

def amicable?(int1, int2)
    sum_proper_divisors(int1) == int2 && sum_proper_divisors(int2) == int1
end

def sum_proper_divisors(num)
  (1..num/2).select { |i|
    num%i == 0
  }.sum
end

examples = [
    [220, 284],
    [63020, 76084],
    [456, 608],
]

examples.each { |e|
    puts "Integer #{e[0]} and #{e[1]}: #{amicable?(*e)}"
}