Euler Problem #5 in Ruby - Smallest number divisible by each number in 1..20

gistfile1.txt

factors = []
(1..20).each do |x|
  rem = x
  factors.each do |f|
    rem /= f if rem % f == 0
  end
  factors << rem if rem > 1
end

puts "The answer is... " + factors.inject(1) {|prod, f| prod *= f}.to_s