LCM of 420, 288, 720, 336
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 420, 288, 720, 336 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 420, 288, 720, 336. So, keep reading to learn more.
Given numbers are 420,288,720,336
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 420,288,720,336 is 10080.
Find LCM of 420,288,720,336 with Prime Factorization
| 2 | 420, 288, 720, 336 |
| 2 | 210, 144, 360, 168 |
| 2 | 105, 72, 180, 84 |
| 2 | 105, 36, 90, 42 |
| 3 | 105, 18, 45, 21 |
| 3 | 35, 6, 15, 7 |
| 5 | 35, 2, 5, 7 |
| 7 | 7, 2, 1, 7 |
| 1, 2, 1, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 3 x 3 x 5 x 7 x 1 x 2 x 1 x 1 = 10080
Therefore, the lowest common multiple of 420,288,720,336 is 10080.
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.
420 x 288 x 720 x 336 = 29262643200
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.
420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
288 : 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 288
720 : 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720
336 : 1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 112, 168, 336
12 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 420,288,720,336, is 12.
Now, the common factors can be found like this.
420:2x 2x 3x 5x 7
288:2x 2x 2x 2x 2x 3x 3
720:2x 2x 2x 2x 3x 3x 5
336:2x 2x 2x 2x 3x 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 2x 3x 3x 3x 5x 7 = 241920
Therefore, the value for common factors is 241920.
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 = 29262643200/(12x241920)
LCM = 29262643200/2903040
LCM = 10080
Thus, we can understand that the LCM of 420,288,720,336 is 10080.
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FAQs on LCM of 420, 288, 720, 336
1. What is the LCM of 420, 288, 720, 336?
Answer: LCM of 420, 288, 720, 336 is 10080.
2. How to calculate the LCM of 420, 288, 720, 336?
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 420, 288, 720, 336.
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}.