Given numbers are 840,781,796,728

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

The LCM of 840,781,796,728 is 1697175480.

Find LCM of 840,781,796,728 with Prime Factorization

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

2 x 2 x 2 x 7 x 15 x 781 x 199 x 13 = 1697175480

Therefore, the lowest common multiple of 840,781,796,728 is 1697175480.

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.

840 x 781 x 796 x 728 = 380167307520

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.

840 : 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840

781 : 1, 11, 71, 781

796 : 1, 2, 4, 199, 398, 796

728 : 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 840,781,796,728, is 1.

Now, the common factors can be found like this.

840:2x 2x 2x 3x 5x 7

781:11x 71

796:2x 2x 199

728:2x 2x 2x 7x 13

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 2x 7 = 224

Therefore, the value for common factors is 224.

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 = 380167307520/(1x224)

LCM = 380167307520/224

LCM = 1697175480

Thus, we can understand that the LCM of 840,781,796,728 is 1697175480.

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

• LCM of 794, 371, 312, 486
• LCM of 411, 371, 947, 632
• LCM of 364, 512, 267, 805
• LCM of 384, 263, 231, 666
• LCM of 139, 272, 267, 387

1. What is the LCM of 840, 781, 796, 728?

Answer: LCM of 840, 781, 796, 728 is 1697175480.

2. How to calculate the LCM of 840, 781, 796, 728?

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 840, 781, 796, 728.

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}.