Every number is divisible by 21. Any element of the set of numbers of the form 21*k where k is an integer is evenly divisible.
Chat with our AI personalities
four factors: 1, 3, 7, 21
To find what the factors of a number are you can list the factor pairs: 1 x 21 3 x 7 The factors of 21 are 1, 3, 7, and 21.
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.
The factors of 21 are: 1, 3, 7, 21 The factors of 23 are: 1, 23
The factors of 21 are: 1, 3, 7, 21 The factors of 51 are: 1, 3, 17, 51