Factor-perfect numbers: Difference between revisions

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""" See reference paper by F(n) = sum over k( F( n / a(k) ) + 1, where a are the k divisors of n """
""" See reference paper by Erdos, page 1 """
@memoize function kfactors(n)
@memoize function kfactors(n)
n < 2 && return 0
n < 2 && return 0
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