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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Arithmetic-Rational/F-Sharp/arithmetic-rational.fs Normal file
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type frac = Microsoft.FSharp.Math.BigRational
let perf n = 1N = List.fold (+) 0N (List.map (fun i -> if n % i = 0 then 1N/frac.FromInt(i) else 0N) [2..n])
for i in 1..(1<<<19) do if (perf i) then printfn "%i is perfect" i