English
Noun
sociable numbers (plural)
- number theory 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.
#:The numbers in the sequence <1264460, 1547860, 1727636, 1305184> are sociable numbers.
See also
abundant number
amicable numbers
deficient number
perfect number
w:Sociable number|Wikipedia article on sociable numbers
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