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The mathematician explained how a sociable number fits into a cycle of integers where each term's proper divisors sum to the next.
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The mathematician explained how a sociable number fits into a cycle of integers where each term's proper divisors sum to the next.
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Related words
sociable number
Noun
(number
theory)
Any
of
a
sequence
of
numbers
having
the
property
that
the
sum
of
the
divisors
of
each,
excluding
itself,
is
equal
to
the
next
number
in
the
sequence;
in
the
case
of
the
last
number
of
the
sequence,
the
sum
of
the
divisors,
excluding
that
number,
is
equal
to
the
first
number
of
the
sequence.
Japanese Meaning
数論において、ある数列内の各数について、その数自身を除く約数の和が次の数と一致し、数列の最後の数においては、その和が最初の数と一致するという性質を持つ数のこと。
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