Revise Highest Common Factor and Lowest Common Multiple, HCF and LCM using prime factors and how to use Venn diagrams in this Bitesize guide.

The product of all the prime factors in the union of the sets of prime factors gives the lowest common multiple (LCM). 5 × 7 × 2 × 2 × 2 = 280. The LCM of 70 and 8 is 280 ...