NZMATH / JSON is a NZMATH web service. HTTP GET request to a service URL will return the result in JSON.
NZMATH is a python package for number theoretical computation. It is entirely written in pure Python. Please visit the web page and download it.
The modules available on this service site is just a part of NZMATH modules, whose functions have typically integer->integer signature.
Additionally, some builtin and standard library modules functions are accessible.