Given numbers are 685,785,910,720

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

The LCM of 685,785,910,720 is 1409269680.

Find LCM of 685,785,910,720 with Prime Factorization

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

2 x 5 x 137 x 157 x 91 x 72 = 1409269680

Therefore, the lowest common multiple of 685,785,910,720 is 1409269680.

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.

685 x 785 x 910 x 720 = 352317420000

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.

685 : 1, 5, 137, 685

785 : 1, 5, 157, 785

910 : 1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 455, 910

720 : 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720

5 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 685,785,910,720, is 5.

Now, the common factors can be found like this.

685:5x 137

785:5x 157

910:2x 5x 7x 13

720:2x 2x 2x 2x 3x 3x 5

From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.

2x 5x 5 = 50

Therefore, the value for common factors is 50.

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 = 352317420000/(5x50)

LCM = 352317420000/250

LCM = 1409269680

Thus, we can understand that the LCM of 685,785,910,720 is 1409269680.

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

• LCM of 753, 641, 263, 460
• LCM of 544, 960, 981, 874
• LCM of 128, 351, 306, 590
• LCM of 761, 100, 857, 453
• LCM of 839, 498, 327, 183

1. What is the LCM of 685, 785, 910, 720?

Answer: LCM of 685, 785, 910, 720 is 1409269680.

2. How to calculate the LCM of 685, 785, 910, 720?

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 685, 785, 910, 720.

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}.