# Haskell Quiz/Weird Numbers/Solution Dolio

### From HaskellWiki

A first, rather naive solution:

module Main where import Control.Monad.Reader import Data.List import System power = filterM $ const [True,False] divisors n = sort $ 1 : join [ [x, n `div` x] | x <- l ] where l = filter ((==0) . (mod n)) . takeWhile ((<n) . join (*)) $ [2..] weird n = sum s > n && all (n/=) (map sum ss) where (s:ss) = power $ divisors n main = print . filter weird . enumFromThenTo 70 72 . read . head =<< getArgs