Question
Find Least Common Multiple of 164, 213 and 532 using division method..
Answer
LCM( 164, 213, 532 ) = 4645956
Explanation
Step 1 : Write the given numbers in a horizontal line.
| 164 | 213 | 532 |
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 | 164 | 213 | 532 |
| 82 | 213 | 266 |
Step 3 : Continue dividing by prime numbers till we get 1 in all columns.
| 2 | 164 | 213 | 532 |
| 2 | 82 | 213 | 266 |
| 3 | 41 | 213 | 133 |
| 7 | 41 | 71 | 133 |
| 19 | 41 | 71 | 19 |
| 41 | 41 | 71 | 1 |
| 71 | 1 | 71 | 1 |
| 1 | 1 | 1 |
Step 4 : Multiply numbers in first column to get LCM.
LCM( 164, 213, 532 ) = 2 · 2 · 3 · 7 · 19 · 41 · 71 = 4645956 .
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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