https://www.math.utah.edu/~carlson/notes/python.pdf
https://www.w3resource.com/python-exercises/math/
https://www.geeksforgeeks.org/print-all-prime-factors-of-a-given-number/
https://www.youtube.com/watch?v=2p3kwF04xcA
韓信點兵
https://medium.com/@fangya.123/chinese-remainder-theorem-with-python-a483de81fbb8