What is highest common factor of 6 12 and 16 July 8, 2019 16 32 64 128 What is the highest common factor hcf of 6 12 and 16 What is the highest common factor gcf of 6 12 and 16 What is the highest common factor between 6 12 and 16 Highest common factor of 6 12 and 16 by division method