Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 90 and 92 the smallest integer that is 4140 that is divisible by both numbers.
Least Common Multiple (LCM) of 90 and 92 is 4140.
LCM(90,92) = 4140
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 90 and 92. First we will calculate the prime factors of 90 and 92.
Prime Factorization of 90
2 | 90 |
3 | 45 |
3 | 15 |
5 | 5 |
1 |
Prime factors of 90 are 2, 3,5. Prime factorization of 90 in exponential form is:
90 = 21×32×51
Prime Factorization of 92
2 | 92 |
2 | 46 |
23 | 23 |
1 |
Prime factors of 92 are 2,23. Prime factorization of 92 in exponential form is:
92 = 22×231
Now multiplying the highest exponent prime factors to calculate the LCM of 90 and 92.
LCM(90,92) = 22×32×51×231
LCM(90,92) = 4140
Factors of 90
List of positive integer factors of 90 that divides 90 without a remainder.
1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90
Factors of 92
List of positive integer factors of 92 that divides 92 without a remainder.
1, 2, 4, 23, 46, 92
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 90 and 92, than apply into the LCM equation.
GCF(90,92) = 2
LCM(90,92) = ( 90 × 92) / 2
LCM(90,92) = 8280 / 2
LCM(90,92) = 4140
(i) The LCM of 92 and 90 is associative
LCM of 90 and 92 = LCM of 92 and 90
1. What is the LCM of 90 and 92?
Answer: LCM of 90 and 92 is 4140.
2. What are the Factors of 90?
Answer: Factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90. There are 12 integers that are factors of 90. The greatest factor of 90 is 90.
3. What are the Factors of 92?
Answer: Factors of 92 are 1, 2, 4, 23, 46, 92. There are 6 integers that are factors of 92. The greatest factor of 92 is 92.
4. How to Find the LCM of 90 and 92?
Answer:
Least Common Multiple of 90 and 92 = 4140
Step 1: Find the prime factorization of 90
90 = 2 x 3 x 3 x 5
Step 2: Find the prime factorization of 92
92 = 2 x 2 x 23
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 4140 = 2 x 2 x 3 x 3 x 5 x 23
Step 4: Therefore, the least common multiple of 90 and 92 is 4140.