LCM of 491, 686, 987, 974
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 491, 686, 987, 974 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 491, 686, 987, 974. So, keep reading to learn more.
Given numbers are 491,686,987,974
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 491,686,987,974 is 23128830942.
Find LCM of 491,686,987,974 with Prime Factorization
| 2 | 491, 686, 987, 974 |
| 7 | 491, 343, 987, 487 |
| 491, 49, 141, 487 |
Multiply the prime numbers at the bottom and the left side.
2 x 7 x 491 x 49 x 141 x 487 = 23128830942
Therefore, the lowest common multiple of 491,686,987,974 is 23128830942.
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.
491 x 686 x 987 x 974 = 323803633188
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.
491 : 1, 491
686 : 1, 2, 7, 14, 49, 98, 343, 686
987 : 1, 3, 7, 21, 47, 141, 329, 987
974 : 1, 2, 487, 974
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 491,686,987,974, is 1.
Now, the common factors can be found like this.
491:491
686:2x 7x 7x 7
987:3x 7x 47
974:2x 487
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 7 = 14
Therefore, the value for common factors is 14.
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 = 323803633188/(1x14)
LCM = 323803633188/14
LCM = 23128830942
Thus, we can understand that the LCM of 491,686,987,974 is 23128830942.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 491, 686, 987, 974
1. What is the LCM of 491, 686, 987, 974?
Answer: LCM of 491, 686, 987, 974 is 23128830942.
2. How to calculate the LCM of 491, 686, 987, 974?
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 491, 686, 987, 974.
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}.