Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 2816 and 2820 the smallest integer that is 1985280 that is divisible by both numbers.
Least Common Multiple (LCM) of 2816 and 2820 is 1985280.
LCM(2816,2820) = 1985280
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 2816 and 2820. First we will calculate the prime factors of 2816 and 2820.
Prime Factorization of 2816
2 | 2816 |
2 | 1408 |
2 | 704 |
2 | 352 |
2 | 176 |
2 | 88 |
2 | 44 |
2 | 22 |
11 | 11 |
1 |
Prime factors of 2816 are 2,11. Prime factorization of 2816 in exponential form is:
2816 = 28×111
Prime Factorization of 2820
2 | 2820 |
2 | 1410 |
3 | 705 |
5 | 235 |
47 | 47 |
1 |
Prime factors of 2820 are 2, 3, 5,47. Prime factorization of 2820 in exponential form is:
2820 = 22×31×51×471
Now multiplying the highest exponent prime factors to calculate the LCM of 2816 and 2820.
LCM(2816,2820) = 28×31×51×111×471
LCM(2816,2820) = 1985280
Factors of 2816
List of positive integer factors of 2816 that divides 2816 without a remainder.
1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 128, 176, 256, 352, 704, 1408, 2816
Factors of 2820
List of positive integer factors of 2820 that divides 2820 without a remainder.
1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 47, 60, 94, 141, 188, 235, 282, 470, 564, 705, 940, 1410, 2820
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2816 and 2820, than apply into the LCM equation.
GCF(2816,2820) = 4
LCM(2816,2820) = ( 2816 × 2820) / 4
LCM(2816,2820) = 7941120 / 4
LCM(2816,2820) = 1985280
(i) The LCM of 2820 and 2816 is associative
LCM of 2816 and 2820 = LCM of 2820 and 2816
1. What is the LCM of 2816 and 2820?
Answer: LCM of 2816 and 2820 is 1985280.
2. What are the Factors of 2816?
Answer: Factors of 2816 are 1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 128, 176, 256, 352, 704, 1408, 2816. There are 18 integers that are factors of 2816. The greatest factor of 2816 is 2816.
3. What are the Factors of 2820?
Answer: Factors of 2820 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 47, 60, 94, 141, 188, 235, 282, 470, 564, 705, 940, 1410, 2820. There are 24 integers that are factors of 2820. The greatest factor of 2820 is 2820.
4. How to Find the LCM of 2816 and 2820?
Answer:
Least Common Multiple of 2816 and 2820 = 1985280
Step 1: Find the prime factorization of 2816
2816 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 11
Step 2: Find the prime factorization of 2820
2820 = 2 x 2 x 3 x 5 x 47
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1985280 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 11 x 47
Step 4: Therefore, the least common multiple of 2816 and 2820 is 1985280.