Post date: Oct 23, 2019 12:29:49 PM
The first number in a chain of five "sociable numbers." The sum of the proper divisors of each number in the chain equals the next number, then the sum of the proper divisors of the last number equals 12,496!
12496, 14288, 15472, 14536, 14264
This is the only known chain of 5 sociable numbers.