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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.
if the int is 48 it has 8 as a divisor but sqrt(48) is about 6.9
In fact -- as stated in other comments of high-rated answers -- you can even stop at
sqrt(integer)
.good idea
This isn't a Kata issue, but instead a CW issue.
Interesting, thank you for the tip.