This is probably the shortest question I've ever posted.

How many distinct factors divide 12345654321 exactly?

Include 1 and the number itself as factors and, of course, we're only looking at positive integers.

This is supposed to be done by hand within a timed competition – calculators should not be used, and should not be necessary!

**Feel free to comment, ask questions and even check your answer in the comments box below powered by Disqus.**

**If you enjoy using this website then please consider making a donation - every little helps :-)**

**You can receive these questions directly to your email box or read them in an RSS reader. Subscribe using the links on the right.**

**Don’t forget to follow Gifted Mathematics on Google+, Facebook or Twitter. You may add your own interesting questions on our Google+ Community and Facebook..**

You can also subscribe to our Bookmarks on StumbleUpon and Pinterest. Many resources never make it onto the pages of Gifted Mathematics but are stored in these bookmarking websites to share with you.You can also subscribe to our Bookmarks on StumbleUpon and Pinterest. Many resources never make it onto the pages of Gifted Mathematics but are stored in these bookmarking websites to share with you.

## No comments:

## Post a comment