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LCM of 821, 780, 715, 738

Created By : Jatin Gogia
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023


Find the LCM of 821, 780, 715, 738 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 821, 780, 715, 738. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 821,780,715,738

Given numbers are 821,780,715,738

The least common multiple of numbers can be find using the prime factorization method or LCM formula.

The LCM of 821,780,715,738 is 866434140.

Find LCM of 821,780,715,738 with Prime Factorization


2 821, 780, 715, 738
3 821, 390, 715, 369
5 821, 130, 715, 123
13 821, 26, 143, 123
821, 2, 11, 123

Multiply the prime numbers at the bottom and the left side.

2 x 3 x 5 x 13 x 821 x 2 x 11 x 123 = 866434140

Therefore, the lowest common multiple of 821,780,715,738 is 866434140.

LCM Formula to Find Lowest Common Multiple of 821,780,715,738

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.

821 x 780 x 715 x 738 = 337909314600

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.

821 : 1, 821

780 : 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780

715 : 1, 5, 11, 13, 55, 65, 143, 715

738 : 1, 2, 3, 6, 9, 18, 41, 82, 123, 246, 369, 738

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 821,780,715,738, is 1.

Now, the common factors can be found like this.

821:821

780:2x 2x 3x 5x 13

715:5x 11x 13

738:2x 3x 3x 41

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 5x 13 = 390

Therefore, the value for common factors is 390.

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 = 337909314600/(1x390)

LCM = 337909314600/390

LCM = 866434140

Thus, we can understand that the LCM of 821,780,715,738 is 866434140.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 821, 780, 715, 738

1. What is the LCM of 821, 780, 715, 738?

Answer: LCM of 821, 780, 715, 738 is 866434140.

2. How to calculate the LCM of 821, 780, 715, 738?

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 821, 780, 715, 738.

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}.