When I download OneNote 2013 for Windows, I only get a installer which in turn downloads the whole package and then installs it. Since I would like to install OneNote on several computers, its a bit silly to download it again and again. So I wonder if I can download the whole OneNote package?

Simon

try using ODT tool to download a full package of OneNote:

https://support.microsoft.com/en-us/kb/2842297?wa=wsignin1.0

this is not tested, i'm not sure if this will work.