Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 2420 and 2428 the smallest integer that is 1468940 that is divisible by both numbers.
Least Common Multiple (LCM) of 2420 and 2428 is 1468940.
LCM(2420,2428) = 1468940
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 2420 and 2428. First we will calculate the prime factors of 2420 and 2428.
Prime Factorization of 2420
2 | 2420 |
2 | 1210 |
5 | 605 |
11 | 121 |
11 | 11 |
1 |
Prime factors of 2420 are 2, 5,11. Prime factorization of 2420 in exponential form is:
2420 = 22×51×112
Prime Factorization of 2428
2 | 2428 |
2 | 1214 |
607 | 607 |
1 |
Prime factors of 2428 are 2,607. Prime factorization of 2428 in exponential form is:
2428 = 22×6071
Now multiplying the highest exponent prime factors to calculate the LCM of 2420 and 2428.
LCM(2420,2428) = 22×51×112×6071
LCM(2420,2428) = 1468940
Factors of 2420
List of positive integer factors of 2420 that divides 2420 without a remainder.
1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420
Factors of 2428
List of positive integer factors of 2428 that divides 2428 without a remainder.
1, 2, 4, 607, 1214, 2428
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2420 and 2428, than apply into the LCM equation.
GCF(2420,2428) = 4
LCM(2420,2428) = ( 2420 × 2428) / 4
LCM(2420,2428) = 5875760 / 4
LCM(2420,2428) = 1468940
(i) The LCM of 2428 and 2420 is associative
LCM of 2420 and 2428 = LCM of 2428 and 2420
1. What is the LCM of 2420 and 2428?
Answer: LCM of 2420 and 2428 is 1468940.
2. What are the Factors of 2420?
Answer: Factors of 2420 are 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420. There are 18 integers that are factors of 2420. The greatest factor of 2420 is 2420.
3. What are the Factors of 2428?
Answer: Factors of 2428 are 1, 2, 4, 607, 1214, 2428. There are 6 integers that are factors of 2428. The greatest factor of 2428 is 2428.
4. How to Find the LCM of 2420 and 2428?
Answer:
Least Common Multiple of 2420 and 2428 = 1468940
Step 1: Find the prime factorization of 2420
2420 = 2 x 2 x 5 x 11 x 11
Step 2: Find the prime factorization of 2428
2428 = 2 x 2 x 607
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1468940 = 2 x 2 x 5 x 11 x 11 x 607
Step 4: Therefore, the least common multiple of 2420 and 2428 is 1468940.