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
Most nonzero elements in row
Project Euler: Problem 6, Natural numbers, squares and sums.
01 - Scalar variables
05 - Vector Equations 1
Put m balls into n boxes (again)
Project Euler: Problem 14 Longest Collatz sequence(harder version)
Find the right number make the equation
Put m balls into n boxes
Big Integer Sqrt
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