How to scrape facebook numeric IDs in bulk?

I have the urls of users and i want to scrape their facebook numeric ID for advertising purposes.
Now , i know there are few websites and tools available in market by which i can scrape maximum 100 IDs at once.
I want to know, is there any tool (free or paid) available by which i can scrape IDs in bulk? like 20k IDs at once?

I can code you one. Send me a message, bud.