Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 31485 and 31491 the smallest integer that is 330498045 that is divisible by both numbers.
Least Common Multiple (LCM) of 31485 and 31491 is 330498045.
LCM(31485,31491) = 330498045
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 31485 and 31491. First we will calculate the prime factors of 31485 and 31491.
Prime Factorization of 31485
3 | 31485 |
5 | 10495 |
2099 | 2099 |
1 |
Prime factors of 31485 are 3, 5,2099. Prime factorization of 31485 in exponential form is:
31485 = 31×51×20991
Prime Factorization of 31491
3 | 31491 |
3 | 10497 |
3499 | 3499 |
1 |
Prime factors of 31491 are 3,3499. Prime factorization of 31491 in exponential form is:
31491 = 32×34991
Now multiplying the highest exponent prime factors to calculate the LCM of 31485 and 31491.
LCM(31485,31491) = 32×51×20991×34991
LCM(31485,31491) = 330498045
Factors of 31485
List of positive integer factors of 31485 that divides 31485 without a remainder.
1, 3, 5, 15, 2099, 6297, 10495, 31485
Factors of 31491
List of positive integer factors of 31491 that divides 31491 without a remainder.
1, 3, 9, 3499, 10497, 31491
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31485 and 31491, than apply into the LCM equation.
GCF(31485,31491) = 3
LCM(31485,31491) = ( 31485 × 31491) / 3
LCM(31485,31491) = 991494135 / 3
LCM(31485,31491) = 330498045
(i) The LCM of 31491 and 31485 is associative
LCM of 31485 and 31491 = LCM of 31491 and 31485
1. What is the LCM of 31485 and 31491?
Answer: LCM of 31485 and 31491 is 330498045.
2. What are the Factors of 31485?
Answer: Factors of 31485 are 1, 3, 5, 15, 2099, 6297, 10495, 31485. There are 8 integers that are factors of 31485. The greatest factor of 31485 is 31485.
3. What are the Factors of 31491?
Answer: Factors of 31491 are 1, 3, 9, 3499, 10497, 31491. There are 6 integers that are factors of 31491. The greatest factor of 31491 is 31491.
4. How to Find the LCM of 31485 and 31491?
Answer:
Least Common Multiple of 31485 and 31491 = 330498045
Step 1: Find the prime factorization of 31485
31485 = 3 x 5 x 2099
Step 2: Find the prime factorization of 31491
31491 = 3 x 3 x 3499
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 330498045 = 3 x 3 x 5 x 2099 x 3499
Step 4: Therefore, the least common multiple of 31485 and 31491 is 330498045.