The factors of 21 are: 1 3 7 21 The prime factors are: 3 and 7
1, 3, 7, 21 3 and 7 are prime.
factors of 21: 3, 7 prime factors of 21: 3, 7
18 has prime factors 3 & 2 whereas 21 has prime factors 3 & 7.
The prime factors of 21 are 3,7.
The factors of 18 are: 1, 2, 3, 6, 9, and 18.The prime factors of 18 are: 2 and 3.The factors of 21 are: 1, 3, 7, and 21.The prime factors of 21 are: 3 and 7.
As a product of its prime factors: 3*7 = 21
prime factor = prime number which can be divided into the given number with no remainder The prime factors of 21 are 3 and 7.
The prime factors of 21 are 3 x 7, so the prime factors of 21 squared are 32 x 72. The factors of 21 squared are 1, 3, 7, 9, 21, 49, 63, 147, and 441.
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.
21 has two prime factors.
1, -1, 3, -3, 7, -7, 21, -21 3 and 7 are prime.