Find the greatest common factor and the least common multiple. 17 and 34,..., 12 and 13,..., 42 and 49

Find the greatest common factor and the least common multiple. 17 and 34,..., 12 and 13,..., 42 and 49

34 greatest common factor 17 least common multiple 3412.13 greatest common factor 1 least common multiple 15642.49 greatest common factor least common multiple 294 with short division, you can also write out the factors and multiples of two numbers to find the common least common factor