12 and 15 lowest common factor July 8, 2019 16 32 64 128 Lowest common factor of 15 12 and 10 Lowest common factor of 12 15 and 18 What is the lowest common factor between 12 and 15 12 and 15 12 and 15 common factors Greatest common multiple Find the least common multiple 12 18 20 ka lcm