How to find the common factors of two numbers? Can I use set operations or list operations to do this?

Question

# 56 = 2 × 2 × 2 × 7
#78 = 2 × 3 × 13

a = {2, 2, 2, 7}
b = {2, 3, 13}
print(a & b)

Output: {2, 3}

It doesn't return all the 2 and 3

Answer 1

It doesn't return what u want bcuz u put those factors in a and b which are SETs.
Sets automatically remove duplicated items.
if u print a u will have ---> {2,7}
Put your factors in list instead.

Answer 2

But, list doesn't have union, intersection operations

Answer 3

Neethu Nath You can write your own codes for that purpose. Define a func for Union.