検索結果- 英語 - 英語
検索内容:
social coupon
noun
sock in
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.
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