LCM( 240240, 1680 ) = 240240
Step 1 : Write the given numbers in a horizontal line.
240240 | 1680 |
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 | 240240 | 1680 |
120120 | 840 |
Step 3 : Continue dividing by prime numbers till we get 1 in all columns.
2 | 240240 | 1680 |
2 | 120120 | 840 |
2 | 60060 | 420 |
2 | 30030 | 210 |
3 | 15015 | 105 |
5 | 5005 | 35 |
7 | 1001 | 7 |
11 | 143 | 1 |
13 | 13 | 1 |
1 | 1 |
Step 4 : Multiply numbers in first column to get LCM.
LCM( 240240, 1680 ) = 2 · 2 · 2 · 2 · 3 · 5 · 7 · 11 · 13 = 240240 .
This solution can be visualized using a Venn diagram.
The LCM is equal to the product of all the numbers on the diagram.