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LCM of 782, 491, 644, 220

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


Find the LCM of 782, 491, 644, 220 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 782, 491, 644, 220. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 782,491,644,220

Given numbers are 782,491,644,220

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

The LCM of 782,491,644,220 is 295650740.

Find LCM of 782,491,644,220 with Prime Factorization


2 782, 491, 644, 220
2 391, 491, 322, 110
23 391, 491, 161, 55
17, 491, 7, 55

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

2 x 2 x 23 x 17 x 491 x 7 x 55 = 295650740

Therefore, the lowest common multiple of 782,491,644,220 is 295650740.

LCM Formula to Find Lowest Common Multiple of 782,491,644,220

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.

782 x 491 x 644 x 220 = 54399736160

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.

782 : 1, 2, 17, 23, 34, 46, 391, 782

491 : 1, 491

644 : 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644

220 : 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 782,491,644,220, is 1.

Now, the common factors can be found like this.

782:2x 17x 23

491:491

644:2x 2x 7x 23

220:2x 2x 5x 11

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 23 = 184

Therefore, the value for common factors is 184.

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 = 54399736160/(1x184)

LCM = 54399736160/184

LCM = 295650740

Thus, we can understand that the LCM of 782,491,644,220 is 295650740.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 782, 491, 644, 220

1. What is the LCM of 782, 491, 644, 220?

Answer: LCM of 782, 491, 644, 220 is 295650740.

2. How to calculate the LCM of 782, 491, 644, 220?

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 782, 491, 644, 220.

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}.