no
Chat with our AI personalities
No. The only factors of a prime number are 1 and itself. The only way that 21 could be a factor of a prime number is if it were a prime number, but it is not because 21 is also divisible by 3 and 7.
3
3 and 7
If 21 is a multiple of the number, the number cannot have 90 as a factor.
3 and 7