A number is perfect if it is equal to the sum of its factors, excluding itself.
Example
The number 6 is perfect since its factors (other than 6) are 1, 2, and 3.
1 + 2 + 3 = 6
Return 1 for true (perfect), otherwise 0.
Solution Stats
Problem Comments
-
4 Comments
Show
1 older comment
Guillaume
on 3 Sep 2014
Could you improve your test suite with more test cases? (e.g. 496, 28 (true) and 26, 500 (false))
Ned Gulley
on 4 Sep 2014
I added some more tests.
Jean-Marie Sainthillier
on 6 Sep 2014
See problem 1012.
J.R.! Menzinger
on 16 Sep 2014
The point "the sum of its factors" is not correct. it must be "the sum of all his divisors"... :-/
Problem Recent Solvers34
Suggested Problems
-
14192 Solvers
-
2725 Solvers
-
434 Solvers
-
81 Solvers
-
239 Solvers
Problem Tags
Select a Web Site
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
Select web siteYou can also select a web site from the following list:
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)