What do you mean with divisor drop list?
The components are the number of territories for each starting positions. You certainly know that you can have, for example, 3 starting positions, each one with more than a single region into it.
Unfortunately, for now you can use the spreadsheet only if you have the same amount for all starting positions. So if you have 2 with 2 components and 1 with 3 components, you need to do your math manually.
I'll develop a better version in future, as soon as i have a bit of free time. So don't be afraid to ask if something is not clear or if you would like to have additional options/features into it.