Anti-primes: Difference between revisions
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=={{header|Ruby}}== |
=={{header|Ruby}}== |
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<syntaxhighlight lang="ruby">require 'prime' |
<syntaxhighlight lang="ruby">require 'prime' |
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{{works with|Halcyon Calc|4.2.7}} |
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def num_divisors(n) |
def num_divisors(n) |
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n.prime_division.inject(1){|prod, (_p,n)| prod *= (n + 1) } |
n.prime_division.inject(1){|prod, (_p,n)| prod *= (n + 1) } |
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