glossory, Mathematics

Amicable numbers

Amicable numbers are two different numbers so related that the sum of the proper divisors of each is equal to the other number.  See "proper divisor" The smallest pair of amicable numbers is (220, 284). They are amicable because the proper divisors of 220 are 1, 2, 4, 5, 10, 11, 20, 22, 44, 55… Continue reading Amicable numbers