Chains of Amicable Numbers

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Amicable pairs are integers and
for which the sum of the proper divisors of
equals
and vice versa. This is a chain of amicable numbers
. They are not amicable pairwise; rather, the sum of the proper divisors of
equals
, where
. Such chains appear very rarely.
Contributed by: Enrique Zeleny (March 2011)
Open content licensed under CC BY-NC-SA
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"Chains of Amicable Numbers"
http://demonstrations.wolfram.com/ChainsOfAmicableNumbers/
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Published: March 7 2011