LCM of 784, 540, 865
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 784, 540, 865 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 784, 540, 865. So, keep reading to learn more.
Given numbers are 784,540,865
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 784,540,865 is 18310320.
Find LCM of 784,540,865 with Prime Factorization
| 2 | 784, 540, 865 |
| 2 | 392, 270, 865 |
| 5 | 196, 135, 865 |
| 196, 27, 173 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 5 x 196 x 27 x 173 = 18310320
Therefore, the lowest common multiple of 784,540,865 is 18310320.
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.
784 x 540 x 865 = 366206400
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.
784 : 1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784
540 : 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540
865 : 1, 5, 173, 865
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 784,540,865, is 1.
Now, the common factors can be found like this.
784:2x 2x 2x 2x 7x 7
540:2x 2x 3x 3x 3x 5
865:5x 173
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 5 = 20
Therefore, the value for common factors is 20.
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 = 366206400/(1x20)
LCM = 366206400/20
LCM = 18310320
Thus, we can understand that the LCM of 784,540,865 is 18310320.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 784, 540, 865
1. What is the LCM of 784, 540, 865?
Answer: LCM of 784, 540, 865 is 18310320.
2. How to calculate the LCM of 784, 540, 865?
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 784, 540, 865.
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}.