LCM( 460, 384, 260, 840 ) = 4018560
Step 1 : Write the given numbers in a horizontal line.
460 | 384 | 260 | 840 |
Step 2 : Divide the given numbers by smallest prime number. In this example we can divide by 2.
(if any number is not divisible by 2, write it down unchanged)
2 | 460 | 384 | 260 | 840 |
230 | 192 | 130 | 420 |
Step 3 : Continue dividing by prime numbers till we get 1 in all columns.
2 | 460 | 384 | 260 | 840 |
2 | 230 | 192 | 130 | 420 |
2 | 115 | 96 | 65 | 210 |
2 | 115 | 48 | 65 | 105 |
2 | 115 | 24 | 65 | 105 |
2 | 115 | 12 | 65 | 105 |
2 | 115 | 6 | 65 | 105 |
3 | 115 | 3 | 65 | 105 |
5 | 115 | 1 | 65 | 35 |
7 | 23 | 1 | 13 | 7 |
13 | 23 | 1 | 13 | 1 |
23 | 23 | 1 | 1 | 1 |
1 | 1 | 1 | 1 |
Step 4 : Multiply numbers in first column to get LCM.
LCM( 460, 384, 260, 840 ) = 2 · 2 · 2 · 2 · 2 · 2 · 2 · 3 · 5 · 7 · 13 · 23 = 4018560 .