DIVISOR: Gives the divisors of an integer, using the Augment(-utility. CFRAC, a simple and fast routine for fractions.
APRIME: A prime finder which divides out all even numbers as well as numbers divisible with three, from number five. This file contains 13 programs for the CASIO fx CG50: AFRAC, a program that uses continued fraction, and can give you a good approximation, as well as the exact value for denominators well above a million.