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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
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I think you can edit the example - so it doesn't look like output data should be '1, 2, 4.....'.
When you read description briefly - like in my case - this is causing confusion.
Isn't 'Find the number of divisors of n.' obvious enought?
I think I'll wait for some more feedback, from other warriors.
An request to everyone - please let me know if description need further clarification