Skip to main content
Code Golf

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

Required fields*

6
  • 3
    \$\begingroup\$ @Tvde1 Proper divisors have to less than the number, otherwise no number other than 1 would be perfect, since every number is divisible by 1 and itself. The sum of proper divisors of 1 is 0 \$\endgroup\$ Commented Mar 12, 2019 at 7:40
  • 1
    \$\begingroup\$ Are we allowed to assume there are no odd perfect numbers? \$\endgroup\$ Commented Mar 12, 2019 at 8:56
  • 5
    \$\begingroup\$ @Grimy Only if you can prove so. Good luck! (though I'm wondering how that would save bytes) \$\endgroup\$ Commented Mar 12, 2019 at 9:15
  • 2
    \$\begingroup\$ So no, too bad. It would cut the size of an ECMA regex answer by a factor of about 3. \$\endgroup\$ Commented Mar 12, 2019 at 9:18
  • 4
    \$\begingroup\$ "Output can be two distinct and consistent values" - may we not use "truthy vs falsey" here (e.g. for Python using zero vs non zero; a list with content vs an empty list; and combinations thereof)? \$\endgroup\$ Commented Mar 12, 2019 at 10:15