Achilles numbers: Difference between revisions
Content added Content deleted
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def 𝜑(n) |
def 𝜑(n) |
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n.prime_division.inject(1) |
n.prime_division.inject(1){|res, (pr, exp)| res * (pr-1) * pr**(exp-1) } |
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end |
end |
||
| Line 2,924: | Line 2,924: | ||
def 𝜑(n) |
def 𝜑(n) |
||
n.prime_division.inject(1) |
n.prime_division.inject(1){|res, (pr, exp)| res * (pr-1) * pr**(exp-1) } |
||
end |
end |
||