Use the LCM of two or more numbers Calculator to find the Least Common Multiple of numbers 18, 42, 39, 45 i.e. 8190 smallest integer divisible by all numbers.

Least common multiple (LCM) of 18, 42, 39, 45 is **8190**.

LCM(18, 42, 39, 45) = 8190

*Least common multiple* or lowest common denominator (lcd) can be calculated in three ways

- Least Common Multiple of 18, 42, 39, 45 by common division method
- Least Common Multiple of 18, 42, 39, 45 with GCF Formula

2 | 18, 42, 39, 45 |

3 | 9, 21, 39, 45 |

3 | 3, 7, 13, 15 |

1, 7, 13, 5 |

∴ So the LCM of the given numbers is 2 x 3 x 3 x 1 x 7 x 13 x 5 = 8190

The formula of **LCM** is LCM(a_{1},a_{2},a_{3}....,a_{n}) = ( a_{1} × a_{2} × a_{3} × .... × a_{n}) / GCF(a_{1},a_{2},a_{3}....,a_{n}) x common factors(if more than 2 numbers have common factors).

We need to calculate greatest common factor of 18,42,39,45 and common factors if more than two numbers have common factor, than apply into the LCM equation.

GCF(18,42,39,45) = 3

common factors(in case of two or more numbers have common factors) = 54

GCF(18,42,39,45) x common factors =3 x 54 = 162

LCM(18,42,39,45) = ( 18 × 42 × 39 × 45 ) / 162

LCM(18,42,39,45) = 1326780 / 162

LCM(18,42,39,45) = 8190

∴ Least Common Multiple of 18,42,39,45 is 8190

Here are some samples of LCM of two or more Numbers calculations.

1. What is the LCM of 18, 42, 39, 45?

Answer: LCM of 18, 42, 39, 45 is 8190.

2. What are the Factors of 8190?

Answer: Factors of 8190 are . There are integers that are factors of 8190

3. How to Find the LCM of 18, 42, 39, 45 ?

Least Common Multiple of 18, 42, 39, 45.

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors with last row quotient of common division that is LCM(18, 42, 39, 45) = 2 x 3 x 3 x 5 x 7 x 13 = 8190.