Problem 34

145 is a curious number, as 1! + 4! + 5! = 1 + 24 + 120 = 145.

Find the sum of all numbers which are equal to the sum of the factorial of their digits.

Note: as 1! = 1 and 2! = 2 are not sums they are not included.

import Data.Char
p034 m= [n|n<-[3..m],n==(sum.map (fac.digitToInt).show)n]
fac = foldr (*) 1 . enumFromTo 1

と適当に作ったができた。

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