Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7982 and 7986 the smallest integer that is 31872126 that is divisible by both numbers.
Least Common Multiple (LCM) of 7982 and 7986 is 31872126.
LCM(7982,7986) = 31872126
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 7982 and 7986. First we will calculate the prime factors of 7982 and 7986.
Prime Factorization of 7982
2 | 7982 |
13 | 3991 |
307 | 307 |
1 |
Prime factors of 7982 are 2, 13,307. Prime factorization of 7982 in exponential form is:
7982 = 21×131×3071
Prime Factorization of 7986
2 | 7986 |
3 | 3993 |
11 | 1331 |
11 | 121 |
11 | 11 |
1 |
Prime factors of 7986 are 2, 3,11. Prime factorization of 7986 in exponential form is:
7986 = 21×31×113
Now multiplying the highest exponent prime factors to calculate the LCM of 7982 and 7986.
LCM(7982,7986) = 21×31×113×131×3071
LCM(7982,7986) = 31872126
Factors of 7982
List of positive integer factors of 7982 that divides 7982 without a remainder.
1, 2, 13, 26, 307, 614, 3991, 7982
Factors of 7986
List of positive integer factors of 7986 that divides 7986 without a remainder.
1, 2, 3, 6, 11, 22, 33, 66, 121, 242, 363, 726, 1331, 2662, 3993, 7986
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7982 and 7986, than apply into the LCM equation.
GCF(7982,7986) = 2
LCM(7982,7986) = ( 7982 × 7986) / 2
LCM(7982,7986) = 63744252 / 2
LCM(7982,7986) = 31872126
(i) The LCM of 7986 and 7982 is associative
LCM of 7982 and 7986 = LCM of 7986 and 7982
1. What is the LCM of 7982 and 7986?
Answer: LCM of 7982 and 7986 is 31872126.
2. What are the Factors of 7982?
Answer: Factors of 7982 are 1, 2, 13, 26, 307, 614, 3991, 7982. There are 8 integers that are factors of 7982. The greatest factor of 7982 is 7982.
3. What are the Factors of 7986?
Answer: Factors of 7986 are 1, 2, 3, 6, 11, 22, 33, 66, 121, 242, 363, 726, 1331, 2662, 3993, 7986. There are 16 integers that are factors of 7986. The greatest factor of 7986 is 7986.
4. How to Find the LCM of 7982 and 7986?
Answer:
Least Common Multiple of 7982 and 7986 = 31872126
Step 1: Find the prime factorization of 7982
7982 = 2 x 13 x 307
Step 2: Find the prime factorization of 7986
7986 = 2 x 3 x 11 x 11 x 11
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 31872126 = 2 x 3 x 11 x 11 x 11 x 13 x 307
Step 4: Therefore, the least common multiple of 7982 and 7986 is 31872126.