Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 4638 and 4645 the smallest integer that is 21543510 that is divisible by both numbers.
Least Common Multiple (LCM) of 4638 and 4645 is 21543510.
LCM(4638,4645) = 21543510
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 4638 and 4645. First we will calculate the prime factors of 4638 and 4645.
Prime Factorization of 4638
2 | 4638 |
3 | 2319 |
773 | 773 |
1 |
Prime factors of 4638 are 2, 3,773. Prime factorization of 4638 in exponential form is:
4638 = 21×31×7731
Prime Factorization of 4645
5 | 4645 |
929 | 929 |
1 |
Prime factors of 4645 are 5,929. Prime factorization of 4645 in exponential form is:
4645 = 51×9291
Now multiplying the highest exponent prime factors to calculate the LCM of 4638 and 4645.
LCM(4638,4645) = 21×31×51×7731×9291
LCM(4638,4645) = 21543510
Factors of 4638
List of positive integer factors of 4638 that divides 4638 without a remainder.
1, 2, 3, 6, 773, 1546, 2319, 4638
Factors of 4645
List of positive integer factors of 4645 that divides 4645 without a remainder.
1, 5, 929, 4645
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 4638 and 4645, than apply into the LCM equation.
GCF(4638,4645) = 1
LCM(4638,4645) = ( 4638 × 4645) / 1
LCM(4638,4645) = 21543510 / 1
LCM(4638,4645) = 21543510
(i) The LCM of 4645 and 4638 is associative
LCM of 4638 and 4645 = LCM of 4645 and 4638
1. What is the LCM of 4638 and 4645?
Answer: LCM of 4638 and 4645 is 21543510.
2. What are the Factors of 4638?
Answer: Factors of 4638 are 1, 2, 3, 6, 773, 1546, 2319, 4638. There are 8 integers that are factors of 4638. The greatest factor of 4638 is 4638.
3. What are the Factors of 4645?
Answer: Factors of 4645 are 1, 5, 929, 4645. There are 4 integers that are factors of 4645. The greatest factor of 4645 is 4645.
4. How to Find the LCM of 4638 and 4645?
Answer:
Least Common Multiple of 4638 and 4645 = 21543510
Step 1: Find the prime factorization of 4638
4638 = 2 x 3 x 773
Step 2: Find the prime factorization of 4645
4645 = 5 x 929
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 21543510 = 2 x 3 x 5 x 773 x 929
Step 4: Therefore, the least common multiple of 4638 and 4645 is 21543510.