If a / b = 1 1 (A. B is a non-zero natural number), then the greatest common factor of a and B is (), and the least common multiple is ()

If a / b = 1 1 (A. B is a non-zero natural number), then the greatest common factor of a and B is (), and the least common multiple is ()

A = B + 1
These two are continuous natural numbers (not zero), obviously coprime
The greatest common factor of a and B is (1), and the least common multiple is (a * b)