A perfect number is a positive integer that is equal to the sum of its proper divisors, excluding itself. For example, 28 is a perfect number because its divisors are 1, 2, 4, 7, and 14, and their sum is 28.
Input: Integer (int).
Output: Logic value (bool).
assert is_perfect(6) == True assert is_perfect(2) == False assert is_perfect(28) == True assert is_perfect(20) == False
How it’s used: perfect numbers have a historical significance in number theory and have been studied in various mathematical and mystical contexts. This function could be useful in mathematical research, cryptography, or just general problem-solving.
- 1 <= n <= 108
CheckiO Extensions allow you to use local files to solve missions. More info in a blog post.
In order to install CheckiO client you'll need installed Python (version at least 3.8)
Install CheckiO Client first:
pip3 install checkio_client
Configure your tool
checkio --domain=py config --key=
Sync solutions into your local folder
(in beta testing) Launch local server so your browser can use it and sync solution between local file end extension on the fly. (doesn't work for safari)
checkio serv -d
Alternatevly, you can install Chrome extension or FF addon
checkio install-plugin --ff
checkio install-plugin --chromium