Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 812 and 816 the smallest integer that is 165648 that is divisible by both numbers.
Least Common Multiple (LCM) of 812 and 816 is 165648.
LCM(812,816) = 165648
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 812 and 816. First we will calculate the prime factors of 812 and 816.
Prime Factorization of 812
2 | 812 |
2 | 406 |
7 | 203 |
29 | 29 |
1 |
Prime factors of 812 are 2, 7,29. Prime factorization of 812 in exponential form is:
812 = 22×71×291
Prime Factorization of 816
2 | 816 |
2 | 408 |
2 | 204 |
2 | 102 |
3 | 51 |
17 | 17 |
1 |
Prime factors of 816 are 2, 3,17. Prime factorization of 816 in exponential form is:
816 = 24×31×171
Now multiplying the highest exponent prime factors to calculate the LCM of 812 and 816.
LCM(812,816) = 24×31×71×171×291
LCM(812,816) = 165648
Factors of 812
List of positive integer factors of 812 that divides 812 without a remainder.
1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812
Factors of 816
List of positive integer factors of 816 that divides 816 without a remainder.
1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 68, 102, 136, 204, 272, 408, 816
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 812 and 816, than apply into the LCM equation.
GCF(812,816) = 4
LCM(812,816) = ( 812 × 816) / 4
LCM(812,816) = 662592 / 4
LCM(812,816) = 165648
(i) The LCM of 816 and 812 is associative
LCM of 812 and 816 = LCM of 816 and 812
1. What is the LCM of 812 and 816?
Answer: LCM of 812 and 816 is 165648.
2. What are the Factors of 812?
Answer: Factors of 812 are 1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812. There are 12 integers that are factors of 812. The greatest factor of 812 is 812.
3. What are the Factors of 816?
Answer: Factors of 816 are 1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 68, 102, 136, 204, 272, 408, 816. There are 20 integers that are factors of 816. The greatest factor of 816 is 816.
4. How to Find the LCM of 812 and 816?
Answer:
Least Common Multiple of 812 and 816 = 165648
Step 1: Find the prime factorization of 812
812 = 2 x 2 x 7 x 29
Step 2: Find the prime factorization of 816
816 = 2 x 2 x 2 x 2 x 3 x 17
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 165648 = 2 x 2 x 2 x 2 x 3 x 7 x 17 x 29
Step 4: Therefore, the least common multiple of 812 and 816 is 165648.