


Related Terms 


Amicable Numbers: Two numbers are amicable if each is the sum of the other number's proper divisors. 
Abundant Number: A number in which the sum of all its proper divisors is greater than the number itself.
Deficient Number: A number in which the sum of all its proper divisors is less than the number itself.
Perfect Number: A number in which the sum of all of its proper divisors equals the number itself.
Proper Factor: All factors of a number other than 1 and the number itself.


