Similar problems are: https://www.mathworks.com/matlabcentral/cody/problems/42791-number-of-divisors-of-a-given-number
For n=64, wouldn't the correct answer be 6, since 64 itself is also even? If you're not counting the number itself as a divisor, then the answers above for n=14 and n=68 would be incorrect.
First non-zero element in each column
Pi Estimate 1
Divisible by 3
Divisible by 5
Make a rainbow matrix (follow-up to checkerboard matrix)
Under the sea: Snell's law & total internal reflection
Equal temperament - musical notes and frequency
Number of paths on a 3d grid
Smallest n, for n! to have m trailing zero digits
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