A perfect number occurs whent the sum of all divisors of a positive integer, except the number itself, equals the number.
28 = 1 + 2 + 4 + 7 + 14;
so return true
10 ~= 1 + 2 + 5
so return false
Times 2 - START HERE
Least common multiple of many numbers
Twins in a Window
Back to basics 3 - Temp Directory
Return fibonacci sequence do not use loop and condition version 3
Compute the intersect point of line and plan
Make an anonymous function that has variable output
Seperate array to small section according to its index position
Big Integer Sqrt
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