LCM( 2, 16, 4, 16 ) = 16
Step 1: Write down factorisation of each number:
2 = 2
16 = 2 · 2 · 2 · 2
4 = 2 · 2
16 = 2 · 2 · 2 · 2
Step 2 : Match primes vertically:
2 | = | 2 | ||||||
16 | = | 2 | · | 2 | · | 2 | · | 2 |
4 | = | 2 | · | 2 |
Step 3 : Bring down numbers in each column and multiply to get LCM:
2 | = | 2 | ||||||||
16 | = | 2 | · | 2 | · | 2 | · | 2 | ||
4 | = | 2 | · | 2 | ||||||
LCM | = | 2 | · | 2 | · | 2 | · | 2 | = | 16 |