Question

There are four positive integers that are divisors of each number in a list, 36, 72, -12, 114, 96. Find the sum of these four positive integers.

Answer 1

If a number is a perfect square then the possible numbers in the unit place are:

1, 4, 5, 6 and 9.

Suggested edits:

Please also include digit 0.

(0,1,4,5,6 and 9).