Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 489 and 492 the smallest integer that is 80196 that is divisible by both numbers.
Least Common Multiple (LCM) of 489 and 492 is 80196.
LCM(489,492) = 80196
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 489 and 492. First we will calculate the prime factors of 489 and 492.
Prime Factorization of 489
3 | 489 |
163 | 163 |
1 |
Prime factors of 489 are 3,163. Prime factorization of 489 in exponential form is:
489 = 31×1631
Prime Factorization of 492
2 | 492 |
2 | 246 |
3 | 123 |
41 | 41 |
1 |
Prime factors of 492 are 2, 3,41. Prime factorization of 492 in exponential form is:
492 = 22×31×411
Now multiplying the highest exponent prime factors to calculate the LCM of 489 and 492.
LCM(489,492) = 22×31×411×1631
LCM(489,492) = 80196
Factors of 489
List of positive integer factors of 489 that divides 489 without a remainder.
1, 3, 163, 489
Factors of 492
List of positive integer factors of 492 that divides 492 without a remainder.
1, 2, 3, 4, 6, 12, 41, 82, 123, 164, 246, 492
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 489 and 492, than apply into the LCM equation.
GCF(489,492) = 3
LCM(489,492) = ( 489 × 492) / 3
LCM(489,492) = 240588 / 3
LCM(489,492) = 80196
(i) The LCM of 492 and 489 is associative
LCM of 489 and 492 = LCM of 492 and 489
1. What is the LCM of 489 and 492?
Answer: LCM of 489 and 492 is 80196.
2. What are the Factors of 489?
Answer: Factors of 489 are 1, 3, 163, 489. There are 4 integers that are factors of 489. The greatest factor of 489 is 489.
3. What are the Factors of 492?
Answer: Factors of 492 are 1, 2, 3, 4, 6, 12, 41, 82, 123, 164, 246, 492. There are 12 integers that are factors of 492. The greatest factor of 492 is 492.
4. How to Find the LCM of 489 and 492?
Answer:
Least Common Multiple of 489 and 492 = 80196
Step 1: Find the prime factorization of 489
489 = 3 x 163
Step 2: Find the prime factorization of 492
492 = 2 x 2 x 3 x 41
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 80196 = 2 x 2 x 3 x 41 x 163
Step 4: Therefore, the least common multiple of 489 and 492 is 80196.