Define to be Euler's totient function, which is the number of positive integers in S.T. . How many positive integers, in , are not divisible by and satisfy the following?
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
This problem is begging to be solved with a computer. Here's my C script.