Perfect numbers: Difference between revisions

added haskell
m (Fixed up LL method formula)
(added haskell)
Line 59:
END IF
END FUNCTION</qbasic>
 
=={{header|Haskell}}==
perf n = n == sum [i | i <- [1..n-1], n `mod` i == 0]
 
=={{header|J}}==
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