Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 621 and 626 the smallest integer that is 388746 that is divisible by both numbers.
Least Common Multiple (LCM) of 621 and 626 is 388746.
LCM(621,626) = 388746
Least common multiple or lowest common denominator (LCD) can be calculated in three ways;
Least common multiple can be found by multiplying the highest exponent prime factors of 621 and 626. First we will calculate the prime factors of 621 and 626.
Prime Factorization of 621
3 | 621 |
3 | 207 |
3 | 69 |
23 | 23 |
1 |
Prime factors of 621 are 3,23. Prime factorization of 621 in exponential form is:
621 = 33×231
Prime Factorization of 626
2 | 626 |
313 | 313 |
1 |
Prime factors of 626 are 2,313. Prime factorization of 626 in exponential form is:
626 = 21×3131
Now multiplying the highest exponent prime factors to calculate the LCM of 621 and 626.
LCM(621,626) = 21×33×231×3131
LCM(621,626) = 388746
Factors of 621
List of positive integer factors of 621 that divides 621 without a remainder.
1, 3, 9, 23, 27, 69, 207, 621
Factors of 626
List of positive integer factors of 626 that divides 626 without a remainder.
1, 2, 313, 626
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 621 and 626, than apply into the LCM equation.
GCF(621,626) = 1
LCM(621,626) = ( 621 × 626) / 1
LCM(621,626) = 388746 / 1
LCM(621,626) = 388746
(i) The LCM of 626 and 621 is associative
LCM of 621 and 626 = LCM of 626 and 621
1. What is the LCM of 621 and 626?
Answer: LCM of 621 and 626 is 388746.
2. What are the Factors of 621?
Answer: Factors of 621 are 1, 3, 9, 23, 27, 69, 207, 621. There are 8 integers that are factors of 621. The greatest factor of 621 is 621.
3. What are the Factors of 626?
Answer: Factors of 626 are 1, 2, 313, 626. There are 4 integers that are factors of 626. The greatest factor of 626 is 626.
4. How to Find the LCM of 621 and 626?
Answer:
Least Common Multiple of 621 and 626 = 388746
Step 1: Find the prime factorization of 621
621 = 3 x 3 x 3 x 23
Step 2: Find the prime factorization of 626
626 = 2 x 313
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 388746 = 2 x 3 x 3 x 3 x 23 x 313
Step 4: Therefore, the least common multiple of 621 and 626 is 388746.