Which number is not a factor of 20

- Which number is a factor of 20 but not a multiple of 4
- Which number is a factor of 20 but not a multiple of 5
- Which number below is not a factor of 20
- Which of the following number is not a factor of 20
- Which is not a factor of 20
- What number is not a factor of 204
- Which choice is not a factor of 20
- Which number is a factor of 20 but not a multiple
- Which is not a factor pair of 200
- Which number is a factor of 20 but not a multiple of 2
- Which number is a factor of 20 but not a multiple of 10
- Which number is a factor of 20 but not a multiple of five
- Which number is a factor of 20 but not a multiple of four
- Which number below is a factor of 20 but not a multiple of 5