Challenge #426: Perfect Numbers

[Spresza]

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[juvillalobos]

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 Took me a bit to figure this one out, ended up using the Euclid-Euler Theorem, figured it was easier than using multi-row formulas I don't know. Also this formula is short, so it didn't take long. 

[tammybrown_tds]

This one was fun!

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[Azzo89]

Here's my Solution Attached

[Kenda]

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[Tofel]

Oh yes, should have used generate rows.

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[Amy_smart]

Here is my solution. 

[nzp1]

Attached is my version of this.

[ggruccio]

I thought about going the macro route, but then tried this!  And it worked!  (Cached the first tools to improve performance).

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[Reesetrain2]

All,

My solution!

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