Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7790 and 7798 the smallest integer that is 30373210 that is divisible by both numbers.
Least Common Multiple (LCM) of 7790 and 7798 is 30373210.
LCM(7790,7798) = 30373210
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 7790 and 7798. First we will calculate the prime factors of 7790 and 7798.
Prime Factorization of 7790
2 | 7790 |
5 | 3895 |
19 | 779 |
41 | 41 |
1 |
Prime factors of 7790 are 2, 5, 19,41. Prime factorization of 7790 in exponential form is:
7790 = 21×51×191×411
Prime Factorization of 7798
2 | 7798 |
7 | 3899 |
557 | 557 |
1 |
Prime factors of 7798 are 2, 7,557. Prime factorization of 7798 in exponential form is:
7798 = 21×71×5571
Now multiplying the highest exponent prime factors to calculate the LCM of 7790 and 7798.
LCM(7790,7798) = 21×51×71×191×411×5571
LCM(7790,7798) = 30373210
Factors of 7790
List of positive integer factors of 7790 that divides 7790 without a remainder.
1, 2, 5, 10, 19, 38, 41, 82, 95, 190, 205, 410, 779, 1558, 3895, 7790
Factors of 7798
List of positive integer factors of 7798 that divides 7798 without a remainder.
1, 2, 7, 14, 557, 1114, 3899, 7798
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7790 and 7798, than apply into the LCM equation.
GCF(7790,7798) = 2
LCM(7790,7798) = ( 7790 × 7798) / 2
LCM(7790,7798) = 60746420 / 2
LCM(7790,7798) = 30373210
(i) The LCM of 7798 and 7790 is associative
LCM of 7790 and 7798 = LCM of 7798 and 7790
1. What is the LCM of 7790 and 7798?
Answer: LCM of 7790 and 7798 is 30373210.
2. What are the Factors of 7790?
Answer: Factors of 7790 are 1, 2, 5, 10, 19, 38, 41, 82, 95, 190, 205, 410, 779, 1558, 3895, 7790. There are 16 integers that are factors of 7790. The greatest factor of 7790 is 7790.
3. What are the Factors of 7798?
Answer: Factors of 7798 are 1, 2, 7, 14, 557, 1114, 3899, 7798. There are 8 integers that are factors of 7798. The greatest factor of 7798 is 7798.
4. How to Find the LCM of 7790 and 7798?
Answer:
Least Common Multiple of 7790 and 7798 = 30373210
Step 1: Find the prime factorization of 7790
7790 = 2 x 5 x 19 x 41
Step 2: Find the prime factorization of 7798
7798 = 2 x 7 x 557
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 30373210 = 2 x 5 x 7 x 19 x 41 x 557
Step 4: Therefore, the least common multiple of 7790 and 7798 is 30373210.