Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7413 and 7420 the smallest integer that is 7857780 that is divisible by both numbers.
Least Common Multiple (LCM) of 7413 and 7420 is 7857780.
LCM(7413,7420) = 7857780
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 7413 and 7420. First we will calculate the prime factors of 7413 and 7420.
Prime Factorization of 7413
3 | 7413 |
7 | 2471 |
353 | 353 |
1 |
Prime factors of 7413 are 3, 7,353. Prime factorization of 7413 in exponential form is:
7413 = 31×71×3531
Prime Factorization of 7420
2 | 7420 |
2 | 3710 |
5 | 1855 |
7 | 371 |
53 | 53 |
1 |
Prime factors of 7420 are 2, 5, 7,53. Prime factorization of 7420 in exponential form is:
7420 = 22×51×71×531
Now multiplying the highest exponent prime factors to calculate the LCM of 7413 and 7420.
LCM(7413,7420) = 22×31×51×71×531×3531
LCM(7413,7420) = 7857780
Factors of 7413
List of positive integer factors of 7413 that divides 7413 without a remainder.
1, 3, 7, 21, 353, 1059, 2471, 7413
Factors of 7420
List of positive integer factors of 7420 that divides 7420 without a remainder.
1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 53, 70, 106, 140, 212, 265, 371, 530, 742, 1060, 1484, 1855, 3710, 7420
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7413 and 7420, than apply into the LCM equation.
GCF(7413,7420) = 7
LCM(7413,7420) = ( 7413 × 7420) / 7
LCM(7413,7420) = 55004460 / 7
LCM(7413,7420) = 7857780
(i) The LCM of 7420 and 7413 is associative
LCM of 7413 and 7420 = LCM of 7420 and 7413
1. What is the LCM of 7413 and 7420?
Answer: LCM of 7413 and 7420 is 7857780.
2. What are the Factors of 7413?
Answer: Factors of 7413 are 1, 3, 7, 21, 353, 1059, 2471, 7413. There are 8 integers that are factors of 7413. The greatest factor of 7413 is 7413.
3. What are the Factors of 7420?
Answer: Factors of 7420 are 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 53, 70, 106, 140, 212, 265, 371, 530, 742, 1060, 1484, 1855, 3710, 7420. There are 24 integers that are factors of 7420. The greatest factor of 7420 is 7420.
4. How to Find the LCM of 7413 and 7420?
Answer:
Least Common Multiple of 7413 and 7420 = 7857780
Step 1: Find the prime factorization of 7413
7413 = 3 x 7 x 353
Step 2: Find the prime factorization of 7420
7420 = 2 x 2 x 5 x 7 x 53
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 7857780 = 2 x 2 x 3 x 5 x 7 x 53 x 353
Step 4: Therefore, the least common multiple of 7413 and 7420 is 7857780.