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 4642 the smallest integer that is 10764798 that is divisible by both numbers.
Least Common Multiple (LCM) of 4638 and 4642 is 10764798.
LCM(4638,4642) = 10764798
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 4642. First we will calculate the prime factors of 4638 and 4642.
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 4642
2 | 4642 |
11 | 2321 |
211 | 211 |
1 |
Prime factors of 4642 are 2, 11,211. Prime factorization of 4642 in exponential form is:
4642 = 21×111×2111
Now multiplying the highest exponent prime factors to calculate the LCM of 4638 and 4642.
LCM(4638,4642) = 21×31×111×2111×7731
LCM(4638,4642) = 10764798
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 4642
List of positive integer factors of 4642 that divides 4642 without a remainder.
1, 2, 11, 22, 211, 422, 2321, 4642
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 4638 and 4642, than apply into the LCM equation.
GCF(4638,4642) = 2
LCM(4638,4642) = ( 4638 × 4642) / 2
LCM(4638,4642) = 21529596 / 2
LCM(4638,4642) = 10764798
(i) The LCM of 4642 and 4638 is associative
LCM of 4638 and 4642 = LCM of 4642 and 4638
1. What is the LCM of 4638 and 4642?
Answer: LCM of 4638 and 4642 is 10764798.
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 4642?
Answer: Factors of 4642 are 1, 2, 11, 22, 211, 422, 2321, 4642. There are 8 integers that are factors of 4642. The greatest factor of 4642 is 4642.
4. How to Find the LCM of 4638 and 4642?
Answer:
Least Common Multiple of 4638 and 4642 = 10764798
Step 1: Find the prime factorization of 4638
4638 = 2 x 3 x 773
Step 2: Find the prime factorization of 4642
4642 = 2 x 11 x 211
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 10764798 = 2 x 3 x 11 x 211 x 773
Step 4: Therefore, the least common multiple of 4638 and 4642 is 10764798.