Find Least Common Multiple of 186, 246 and 280 using division method..
Answer
LCM( 186, 246, 280 ) = 1067640
Explanation
Step 1 : Write the given numbers in a horizontal line.
| 186 | 246 | 280 |
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 | 186 | 246 | 280 |
| 93 | 123 | 140 |
Step 3 : Continue dividing by prime numbers till we get 1 in all columns.
| 2 | 186 | 246 | 280 |
| 2 | 93 | 123 | 140 |
| 2 | 93 | 123 | 70 |
| 3 | 93 | 123 | 35 |
| 5 | 31 | 41 | 35 |
| 7 | 31 | 41 | 7 |
| 31 | 31 | 41 | 1 |
| 41 | 1 | 41 | 1 |
| 1 | 1 | 1 |
Step 4 : Multiply numbers in first column to get LCM.
LCM( 186, 246, 280 ) = 2 · 2 · 2 · 3 · 5 · 7 · 31 · 41 = 1067640 .
This solution can be visualized using a Venn diagram.
The LCM is equal to the product of all the numbers on the diagram.
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