LCM- GCD

Factorization of a number ( with printing steps and indication of rules applied for the numbers. 2: last digit 0 or even number. 3: sum of digits divisible by 3, 5: last digit 0 or 5, 11: if the difference of the sums of alternating digits is divisible by 11. Calculation of the LCM and GCD of 2 or more numbers.