Table of Contents

## What is the GCF and LCM of 12 and 18?

The LCM of 12 and 18 is 36. To find the LCM (least common multiple) of 12 and 18, we need to find the multiples of 12 and 18 (multiples of 12 = 12, 24, 36, 48; multiples of 18 = 18, 36, 54, 72) and choose the smallest multiple that is exactly divisible by 12 and 18, i.e., 36.

## What are all the factors of 12 and 18?

What is the Greatest Common Factor?

- Factors for 12: 1, 2, 3, 4, 6, and 12.
- Factors for 18: 1, 2, 3, 6, 9, and 18.

**What is the GCF 18?**

The factors of 18 are 1, 2, 3, 6, 9, 18. The factors of 27 are 1, 3, 9, 27. The common factors of 18 and 27 are 1, 3 and 9. The greatest common factor of 18 and 27 is 9.

### What is the GCF for 12?

Finding the Greatest Common Factor

Two Numbers | Factors | Greatest Common Factor |
---|---|---|

9 and 12 | 9: 1, 3, 9 12: 1, 2, 3, 4, 6, 12 | 3 |

### What is the least number of 12 and 18?

36

The smallest is 36, so 36 is the LCM of 12 and 18.

**What is the GCF of 18 12 and 3?**

As you can see when you list out the factors of each number, 3 is the greatest number that 3, 12, and 18 divides into.

## What is a factors of 12?

The factors of 12 are 1, 2, 3, 4, 6, and 12, because each of those divides 12 without leaving a remainder (or, alternatively, each of those is a counting number that can be multiplied by another counting number to make 12).

## What are the factors of 18?

Factors of 18

- Factors of 18: 1, 2, 3, 6, 9 and 18.
- Negative Factors of 18: -1, -2, -3, -6, -9 and -18.
- Prime Factors of 18: 2, 3.
- Prime Factorization of 18: 2 × 3 × 3 = 2 × 32
- Sum of Factors of 18: 39.

**What is the largest factor of 12?**

Factors of 12 are the list of integers that can be evenly divided into 12. There are overall 6 factors of 12 among which 12 is the biggest factor and its positive factors are 1, 2, 3, 4, 6 and 12. The sum of all factors of 12 is 28.

### What are the multiples of 12 and 16?

The multiples of 12 are 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144,… The multiples of 16 are 16, 32, 48, 64, 80, 96, 112, 128, 144, 160,… Hence the common multiples of 12 and 16 are 48, 96, 144,… and their LCM is 48.