Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1662 and 1668 the smallest integer that is 462036 that is divisible by both numbers.
Least Common Multiple (LCM) of 1662 and 1668 is 462036.
LCM(1662,1668) = 462036
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 1662 and 1668. First we will calculate the prime factors of 1662 and 1668.
Prime Factorization of 1662
2 | 1662 |
3 | 831 |
277 | 277 |
1 |
Prime factors of 1662 are 2, 3,277. Prime factorization of 1662 in exponential form is:
1662 = 21×31×2771
Prime Factorization of 1668
2 | 1668 |
2 | 834 |
3 | 417 |
139 | 139 |
1 |
Prime factors of 1668 are 2, 3,139. Prime factorization of 1668 in exponential form is:
1668 = 22×31×1391
Now multiplying the highest exponent prime factors to calculate the LCM of 1662 and 1668.
LCM(1662,1668) = 22×31×1391×2771
LCM(1662,1668) = 462036
Factors of 1662
List of positive integer factors of 1662 that divides 1662 without a remainder.
1, 2, 3, 6, 277, 554, 831, 1662
Factors of 1668
List of positive integer factors of 1668 that divides 1668 without a remainder.
1, 2, 3, 4, 6, 12, 139, 278, 417, 556, 834, 1668
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1662 and 1668, than apply into the LCM equation.
GCF(1662,1668) = 6
LCM(1662,1668) = ( 1662 × 1668) / 6
LCM(1662,1668) = 2772216 / 6
LCM(1662,1668) = 462036
(i) The LCM of 1668 and 1662 is associative
LCM of 1662 and 1668 = LCM of 1668 and 1662
1. What is the LCM of 1662 and 1668?
Answer: LCM of 1662 and 1668 is 462036.
2. What are the Factors of 1662?
Answer: Factors of 1662 are 1, 2, 3, 6, 277, 554, 831, 1662. There are 8 integers that are factors of 1662. The greatest factor of 1662 is 1662.
3. What are the Factors of 1668?
Answer: Factors of 1668 are 1, 2, 3, 4, 6, 12, 139, 278, 417, 556, 834, 1668. There are 12 integers that are factors of 1668. The greatest factor of 1668 is 1668.
4. How to Find the LCM of 1662 and 1668?
Answer:
Least Common Multiple of 1662 and 1668 = 462036
Step 1: Find the prime factorization of 1662
1662 = 2 x 3 x 277
Step 2: Find the prime factorization of 1668
1668 = 2 x 2 x 3 x 139
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 462036 = 2 x 2 x 3 x 139 x 277
Step 4: Therefore, the least common multiple of 1662 and 1668 is 462036.