F-16s pledged to Ukraine:
Netherlands - 24
Denmark - 18
Norway - 5 to 10
More than 4,500 F-16s have been produced, and the 1,000th F-35 has already been produced (as of 18 January 2024).
Other nations could likely quickly chip in some more if needed, once all the long lead time start up infrastructure and training is in place.
47-52 F-16 when all is in place - sounds good.