title: GCF/LCM in Haskell
body: <p>I'm extremely new to Haskell.  </p>
  
  <p>Is there a simple way to find the <a href="http://en.wikipedia.org/wiki/Greatest_common_factor" rel="noreferrer">GCF</a> or LCM (Least Common Multiple) in Haskell? </p>