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Abundant number / Deficient number / Perfect number / Amicable numbers / Divisor / Number / Sociable number / Prime number / Table of divisors / Mathematics / Integer sequences / Divisor function
Date: 2009-01-06 21:03:27
Abundant number
Deficient number
Perfect number
Amicable numbers
Divisor
Number
Sociable number
Prime number
Table of divisors
Mathematics
Integer sequences
Divisor function

Sociable numbers: new developments on an ancient problem

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