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 497 the smallest integer that is 243033 that is divisible by both numbers.
Least Common Multiple (LCM) of 489 and 497 is 243033.
LCM(489,497) = 243033
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 497. First we will calculate the prime factors of 489 and 497.
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 497
7 | 497 |
71 | 71 |
1 |
Prime factors of 497 are 7,71. Prime factorization of 497 in exponential form is:
497 = 71×711
Now multiplying the highest exponent prime factors to calculate the LCM of 489 and 497.
LCM(489,497) = 31×71×711×1631
LCM(489,497) = 243033
Factors of 489
List of positive integer factors of 489 that divides 489 without a remainder.
1, 3, 163, 489
Factors of 497
List of positive integer factors of 497 that divides 497 without a remainder.
1, 7, 71, 497
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 489 and 497, than apply into the LCM equation.
GCF(489,497) = 1
LCM(489,497) = ( 489 × 497) / 1
LCM(489,497) = 243033 / 1
LCM(489,497) = 243033
(i) The LCM of 497 and 489 is associative
LCM of 489 and 497 = LCM of 497 and 489
1. What is the LCM of 489 and 497?
Answer: LCM of 489 and 497 is 243033.
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 497?
Answer: Factors of 497 are 1, 7, 71, 497. There are 4 integers that are factors of 497. The greatest factor of 497 is 497.
4. How to Find the LCM of 489 and 497?
Answer:
Least Common Multiple of 489 and 497 = 243033
Step 1: Find the prime factorization of 489
489 = 3 x 163
Step 2: Find the prime factorization of 497
497 = 7 x 71
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 243033 = 3 x 7 x 71 x 163
Step 4: Therefore, the least common multiple of 489 and 497 is 243033.