Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 2808 and 2815 the smallest integer that is 7904520 that is divisible by both numbers.
Least Common Multiple (LCM) of 2808 and 2815 is 7904520.
LCM(2808,2815) = 7904520
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 2808 and 2815. First we will calculate the prime factors of 2808 and 2815.
Prime Factorization of 2808
2 | 2808 |
2 | 1404 |
2 | 702 |
3 | 351 |
3 | 117 |
3 | 39 |
13 | 13 |
1 |
Prime factors of 2808 are 2, 3,13. Prime factorization of 2808 in exponential form is:
2808 = 23×33×131
Prime Factorization of 2815
5 | 2815 |
563 | 563 |
1 |
Prime factors of 2815 are 5,563. Prime factorization of 2815 in exponential form is:
2815 = 51×5631
Now multiplying the highest exponent prime factors to calculate the LCM of 2808 and 2815.
LCM(2808,2815) = 23×33×51×131×5631
LCM(2808,2815) = 7904520
Factors of 2808
List of positive integer factors of 2808 that divides 2808 without a remainder.
1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 36, 39, 52, 54, 72, 78, 104, 108, 117, 156, 216, 234, 312, 351, 468, 702, 936, 1404, 2808
Factors of 2815
List of positive integer factors of 2815 that divides 2815 without a remainder.
1, 5, 563, 2815
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2808 and 2815, than apply into the LCM equation.
GCF(2808,2815) = 1
LCM(2808,2815) = ( 2808 × 2815) / 1
LCM(2808,2815) = 7904520 / 1
LCM(2808,2815) = 7904520
(i) The LCM of 2815 and 2808 is associative
LCM of 2808 and 2815 = LCM of 2815 and 2808
1. What is the LCM of 2808 and 2815?
Answer: LCM of 2808 and 2815 is 7904520.
2. What are the Factors of 2808?
Answer: Factors of 2808 are 1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 36, 39, 52, 54, 72, 78, 104, 108, 117, 156, 216, 234, 312, 351, 468, 702, 936, 1404, 2808. There are 32 integers that are factors of 2808. The greatest factor of 2808 is 2808.
3. What are the Factors of 2815?
Answer: Factors of 2815 are 1, 5, 563, 2815. There are 4 integers that are factors of 2815. The greatest factor of 2815 is 2815.
4. How to Find the LCM of 2808 and 2815?
Answer:
Least Common Multiple of 2808 and 2815 = 7904520
Step 1: Find the prime factorization of 2808
2808 = 2 x 2 x 2 x 3 x 3 x 3 x 13
Step 2: Find the prime factorization of 2815
2815 = 5 x 563
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 7904520 = 2 x 2 x 2 x 3 x 3 x 3 x 5 x 13 x 563
Step 4: Therefore, the least common multiple of 2808 and 2815 is 7904520.