Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1665 and 1670 the smallest integer that is 556110 that is divisible by both numbers.
Least Common Multiple (LCM) of 1665 and 1670 is 556110.
LCM(1665,1670) = 556110
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 1665 and 1670. First we will calculate the prime factors of 1665 and 1670.
Prime Factorization of 1665
3 | 1665 |
3 | 555 |
5 | 185 |
37 | 37 |
1 |
Prime factors of 1665 are 3, 5,37. Prime factorization of 1665 in exponential form is:
1665 = 32×51×371
Prime Factorization of 1670
2 | 1670 |
5 | 835 |
167 | 167 |
1 |
Prime factors of 1670 are 2, 5,167. Prime factorization of 1670 in exponential form is:
1670 = 21×51×1671
Now multiplying the highest exponent prime factors to calculate the LCM of 1665 and 1670.
LCM(1665,1670) = 21×32×51×371×1671
LCM(1665,1670) = 556110
Factors of 1665
List of positive integer factors of 1665 that divides 1665 without a remainder.
1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665
Factors of 1670
List of positive integer factors of 1670 that divides 1670 without a remainder.
1, 2, 5, 10, 167, 334, 835, 1670
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1665 and 1670, than apply into the LCM equation.
GCF(1665,1670) = 5
LCM(1665,1670) = ( 1665 × 1670) / 5
LCM(1665,1670) = 2780550 / 5
LCM(1665,1670) = 556110
(i) The LCM of 1670 and 1665 is associative
LCM of 1665 and 1670 = LCM of 1670 and 1665
1. What is the LCM of 1665 and 1670?
Answer: LCM of 1665 and 1670 is 556110.
2. What are the Factors of 1665?
Answer: Factors of 1665 are 1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665. There are 12 integers that are factors of 1665. The greatest factor of 1665 is 1665.
3. What are the Factors of 1670?
Answer: Factors of 1670 are 1, 2, 5, 10, 167, 334, 835, 1670. There are 8 integers that are factors of 1670. The greatest factor of 1670 is 1670.
4. How to Find the LCM of 1665 and 1670?
Answer:
Least Common Multiple of 1665 and 1670 = 556110
Step 1: Find the prime factorization of 1665
1665 = 3 x 3 x 5 x 37
Step 2: Find the prime factorization of 1670
1670 = 2 x 5 x 167
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 556110 = 2 x 3 x 3 x 5 x 37 x 167
Step 4: Therefore, the least common multiple of 1665 and 1670 is 556110.