Is 1 a perfect number???

Question

I now know 1 is not a prime number, it is unitary. Is 1 a perfect number??? its olny factor is 1 therefore the sum of factors is 1. Or is it a special case again?

Answer 1

Yes it's another special case, for​ perfect numbers it's the of the of factors add up to it's self, not including itself. So the sum for 1 is zero, and not perfect.

https://en.m.wikipedia.org/wiki/Perfect_number

Answer 2

I now have a new version perfectNumber_3 where 1 is not a perfect number any more. It's:
https://code.sololearn.com/cr0O2Pmyj2q3/?ref=app