LCM of 354, 816, 240, 840
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 354, 816, 240, 840 with the LCM of Two or More Numbers Calculator. Here we are teaching you two different methods through which you can calculate the LCM of 354, 816, 240, 840. So, keep reading to learn more.
Given numbers are 354,816,240,840
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 354,816,240,840 is 1685040.
Find LCM of 354,816,240,840 with Prime Factorization
| 2 | 354, 816, 240, 840 |
| 2 | 177, 408, 120, 420 |
| 2 | 177, 204, 60, 210 |
| 2 | 177, 102, 30, 105 |
| 3 | 177, 51, 15, 105 |
| 5 | 59, 17, 5, 35 |
| 59, 17, 1, 7 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 3 x 5 x 59 x 17 x 1 x 7 = 1685040
Therefore, the lowest common multiple of 354,816,240,840 is 1685040.
LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
Firstly, we have to find the product of all the numbers.
354 x 816 x 240 x 840 = 58234982400
Then, let us find the GCF of these five numbers. To do so, we have to list down the factors for each number and choose the highest factor that is in all of the lists.
354 : 1, 2, 3, 6, 59, 118, 177, 354
816 : 1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 68, 102, 136, 204, 272, 408, 816
240 : 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240
840 : 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840
6 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 354,816,240,840, is 6.
Now, the common factors can be found like this.
354:2x 3x 59
816:2x 2x 2x 2x 3x 17
240:2x 2x 2x 2x 3x 5
840:2x 2x 2x 3x 5x 7
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 2x 2x 2x 2x 2x 2x 3x 3x 5 = 5760
Therefore, the value for common factors is 5760.
Now that we have all the elements of the formula, we can plug them in to calculate the LCM.
LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
LCM = 58234982400/(6x5760)
LCM = 58234982400/34560
LCM = 1685040
Thus, we can understand that the LCM of 354,816,240,840 is 1685040.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 354, 816, 240, 840
1. What is the LCM of 354, 816, 240, 840?
Answer: LCM of 354, 816, 240, 840 is 1685040.
2. How to calculate the LCM of 354, 816, 240, 840?
The LCM can be found using two methods. You can either use the LCM formula or the prime factorization method to calculate the LCM of 354, 816, 240, 840.
3. What is the LCM formula?
The LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}.