## What is the least common multiple of 4 and 30?

60

Answer: LCM of 4 and 30 is 60.

## What is the GCF for 4?

The GCF of 4 and 8 is 4. To calculate the greatest common factor of 4 and 8, we need to factor each number (factors of 4 = 1, 2, 4; factors of 8 = 1, 2, 4, 8) and choose the greatest factor that exactly divides both 4 and 8, i.e., 4.

**How do you do GCF?**

Here’s how to find the GCF of a set of numbers using prime factorization:

- List the prime factors of each number.
- Circle every common prime factor — that is, every prime factor that’s a factor of every number in the set.
- Multiply all the circled numbers. The result is the GCF.

**What are the factors of 30?**

The factors of 30 are 1, 2, 3, 5, 6, 10, 15 and 30. The factors of 31 are 1 and 31. Thus, the common factor of 30 and 31 is 1 only, as 31 is a prime number.

### What is the CF and GCF of 45 and 30?

15

The GCF of 30 and 45 is 15.

### How do you find the least common multiple of 4?

The LCM of 4 and 4 is 4. To find the least common multiple of 4 and 4, we need to find the multiples of 4 (multiples of 4 = 4, 8, 12, 16, . . .) and choose the smallest multiple that is exactly divisible by 4 and 4, i.e., 4.

**What is a factor of 4 and 4?**

Did you know, the number 4 is a special number as it is the smallest composite number and the smallest square of a prime number? In this lesson, we will calculate the factors of 4, along with its prime factors, and its factors pairs….Factors of 4 in Pairs.

Product that Results in 4 | Pair Factors of 4 |
---|---|

2 × 2 | 2, 2 |

4 × 1 | 4, 1 |

**What is the greatest common divisor of 4 and 4?**

The GCF of 4 and 4 is 4.

#### What is meant by GCF?

The greatest common factor (GCF) of a set of numbers is the largest factor that all the numbers share. For example, 12, 20, and 24 have two common factors: 2 and 4.