9 lines
382 B
Haskell
9 lines
382 B
Haskell
-- The sequence of triangle numbers is generated by adding the natural numbers.
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-- So the 7th triangle number would be 1 + 2 + 3 + 4 + 5 + 6 + 7 = 28. ...
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-- What is the value of the first triangle number to have over five hundred divisors?
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import Data.List
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import Euler
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triangles = scanl1 (+) [1..] :: [Int]
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main = print $ head $ [ n | n <- triangles, length (divisors n) > 500 ]
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