Answer :

Factors of 20:
1,2,4,5,10,20

Multiples of 2 are any even number, so it has to be an odd number.

Therefore the only number that is a factor of 20 and not a multiple of 2 is 5.

The number 5 is the factor of 20, but it is not a multiple of 5.

What are factors?

A factor is a number or an expression of algebra which divides to another number with no remainder at its end, called factors.

Like:3 and 6 are the factors to 12.

So, according to the given question:

1, 2, 4, 5, 10, 20 all are the factors of 20, and

2,4,10,20 are the multiples of 20

So, according to the given question,

1 and 5 are the factors of 20 and not the multiple of 20.

Hence, 1 and 5 are the two numbers which are the factors of 20 but not its multiple.

Learn more about factors, refer:

https://brainly.com/question/6810544