 # What is a number between 1 and 20 and has 5 factors?

## Which number has exactly 3 factors?

In the numbers from 1 to 100, there are 4 numbers that have exactly 3 factors. The numbers are 4, 9, 25, and 49. As someone else pointed out, these are squares of primes, which makes sense.

## What number has exactly 4 factors?

Some examples of numbers with exactly four factors are 6, 15, and 21. For 6, the factors are 1, 2, 3, and 6, and for 15, the factors are 1, 3, 5, and 15. Similarly, for 21, the factors are 1, 3, 7, and 21.

## How many factors does 18 have?

So all factors of 18: 1, 2, 3, 6, 9, and 18.

## What number has exactly 6 factors?

Most numbers have even number factors because the factors come in pairs. For example, the number 12 has 6 factors: 1, 2, 3, 4, 6, 12.

## How many factors does 12 have?

six factorsSo, 12 has six factors — 1, 2, 3, 4, 6, and 12 — but only two of them (2 and 3) are prime, so it has only two prime factors.

## How many factors does 4 have?

What are all the Factors of 4? The factors of 4 are 1, 2, and 4.

## How many factors does 6 have?

4 factorsFactors of 6 are the list of integers that can be evenly divided into 6. There are overall 4 factors of 6 i.e. 1, 2, 3 and 6 where 6 is the biggest factor. The sum of all factors of 6 is 12. Its Prime Factors are 1, 2, 3, 6 and (1, 6) and (2, 3) are Pair Factors.

## Is 5 a factor number?

5 is a prime number. Therefore, it can have only two factors, i.e., 1 and the number itself. The factors of 5 are 1 and 5.

## How many factors does 19 have?

The number 19 has only two factors, 1 and the number itself. The prime factorization of 19 is 19 = 1 × 19. The number 19 has only one factor pair.