Reference > Brewer’s Dictionary > Abundant Number (An).

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E. Cobham Brewer 1810–1897. Dictionary of Phrase and Fable. 1898.
 
Abundant Number (An).
 
A number such that the sum of all its divisors (except itself) is greater than the number itself. Thus 12 is an abundant number, because its divisors, 1, 2, 3, 4, 6 = 16, which is greater than 12.   1
   A Deficient number is one of which the sum of all its divisors is less than itself, as 10, the divisors of which are 1, 2, 5 = 8, which is less than 10.   2
   A Perfect number is one of which the sum of all its divisors exactly measures itself, as 6, the divisors of which are 1, 2, 3 = 6.   3
 


 Abu’dah.Abus, 

 
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