Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 986 and 990 the smallest integer that is 488070 that is divisible by both numbers.
Least Common Multiple (LCM) of 986 and 990 is 488070.
LCM(986,990) = 488070
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 986 and 990. First we will calculate the prime factors of 986 and 990.
Prime Factorization of 986
2 | 986 |
17 | 493 |
29 | 29 |
1 |
Prime factors of 986 are 2, 17,29. Prime factorization of 986 in exponential form is:
986 = 21×171×291
Prime Factorization of 990
2 | 990 |
3 | 495 |
3 | 165 |
5 | 55 |
11 | 11 |
1 |
Prime factors of 990 are 2, 3, 5,11. Prime factorization of 990 in exponential form is:
990 = 21×32×51×111
Now multiplying the highest exponent prime factors to calculate the LCM of 986 and 990.
LCM(986,990) = 21×32×51×111×171×291
LCM(986,990) = 488070
Factors of 986
List of positive integer factors of 986 that divides 986 without a remainder.
1, 2, 17, 29, 34, 58, 493, 986
Factors of 990
List of positive integer factors of 990 that divides 990 without a remainder.
1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 986 and 990, than apply into the LCM equation.
GCF(986,990) = 2
LCM(986,990) = ( 986 × 990) / 2
LCM(986,990) = 976140 / 2
LCM(986,990) = 488070
(i) The LCM of 990 and 986 is associative
LCM of 986 and 990 = LCM of 990 and 986
1. What is the LCM of 986 and 990?
Answer: LCM of 986 and 990 is 488070.
2. What are the Factors of 986?
Answer: Factors of 986 are 1, 2, 17, 29, 34, 58, 493, 986. There are 8 integers that are factors of 986. The greatest factor of 986 is 986.
3. What are the Factors of 990?
Answer: Factors of 990 are 1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990. There are 24 integers that are factors of 990. The greatest factor of 990 is 990.
4. How to Find the LCM of 986 and 990?
Answer:
Least Common Multiple of 986 and 990 = 488070
Step 1: Find the prime factorization of 986
986 = 2 x 17 x 29
Step 2: Find the prime factorization of 990
990 = 2 x 3 x 3 x 5 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 = 488070 = 2 x 3 x 3 x 5 x 11 x 17 x 29
Step 4: Therefore, the least common multiple of 986 and 990 is 488070.