1, 7
1, 3, 7, 21
Chat with our AI personalities
The factors of 15 are: 1, 3, 5, and 15.The prime factors of 15 are: 3 and 5.The factors of 21 are: 1, 3, 7, and 21.The prime factors of 21 are: 3 and 7.
If 21 is a factor of a number, then the factors of 21 must also be factors. So 3 and 7
The factors of 9 are: 1, 3, 9 The factors of 21 are: 1, 3, 7, 21
1, 3, 7, 21 are the distinct factors of 21.
The factors of 21 are: 1, 3, 7, 21 The factors of 23 are: 1, 23