LCM of 731, 390, 784, 147
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 731, 390, 784, 147 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 731, 390, 784, 147. So, keep reading to learn more.
Given numbers are 731,390,784,147
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 731,390,784,147 is 111755280.
Find LCM of 731,390,784,147 with Prime Factorization
| 2 | 731, 390, 784, 147 |
| 3 | 731, 195, 392, 147 |
| 7 | 731, 65, 392, 49 |
| 7 | 731, 65, 56, 7 |
| 731, 65, 8, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 7 x 7 x 731 x 65 x 8 x 1 = 111755280
Therefore, the lowest common multiple of 731,390,784,147 is 111755280.
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.
731 x 390 x 784 x 147 = 32856052320
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.
731 : 1, 17, 43, 731
390 : 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
784 : 1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784
147 : 1, 3, 7, 21, 49, 147
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 731,390,784,147, is 1.
Now, the common factors can be found like this.
731:17x 43
390:2x 3x 5x 13
784:2x 2x 2x 2x 7x 7
147:3x 7x 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 3x 7x 7 = 294
Therefore, the value for common factors is 294.
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 = 32856052320/(1x294)
LCM = 32856052320/294
LCM = 111755280
Thus, we can understand that the LCM of 731,390,784,147 is 111755280.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 731, 390, 784, 147
1. What is the LCM of 731, 390, 784, 147?
Answer: LCM of 731, 390, 784, 147 is 111755280.
2. How to calculate the LCM of 731, 390, 784, 147?
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 731, 390, 784, 147.
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}.