Given numbers are 820,540,391,740

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

The LCM of 820,540,391,740 is 320299380.

Find LCM of 820,540,391,740 with Prime Factorization

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

2 x 2 x 5 x 41 x 27 x 391 x 37 = 320299380

Therefore, the lowest common multiple of 820,540,391,740 is 320299380.

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.

820 x 540 x 391 x 740 = 128119752000

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.

820 : 1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820

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

391 : 1, 17, 23, 391

740 : 1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 820,540,391,740, is 1.

Now, the common factors can be found like this.

820:2x 2x 5x 41

540:2x 2x 3x 3x 3x 5

391:17x 23

740:2x 2x 5x 37

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 5x 5 = 400

Therefore, the value for common factors is 400.

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 = 128119752000/(1x400)

LCM = 128119752000/400

LCM = 320299380

Thus, we can understand that the LCM of 820,540,391,740 is 320299380.

Here are some samples of LCM of two or more Numbers calculations.

• LCM of 571, 839, 550, 541
• LCM of 383, 716, 429, 739
• LCM of 609, 237, 908, 263
• LCM of 505, 698, 197, 222
• LCM of 765, 273, 982, 276

1. What is the LCM of 820, 540, 391, 740?

Answer: LCM of 820, 540, 391, 740 is 320299380.

2. How to calculate the LCM of 820, 540, 391, 740?

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 820, 540, 391, 740.

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}.