Add topics: perfect numbers
Add topics: perfect numbers

exercism/python,smalley/python,exercism/xpython,pheanex/xpython,N-Parsons/exercism-python,exercism/python,jmluy/xpython,behrtam/xpython,exercism/xpython,behrtam/xpython,N-Parsons/exercism-python,pheanex/xpython,jmluy/xpython,smalley/python