28 has only six factors: 1 2 4 7 14 28.
108 has twelve factors, 112 has ten factors.
The First Ten Years was created on 1990-04-28.
28 only has six factors: 1, 2, 4, 7, 14, 28.
8 only has four factors.
81 only has five factors.
86 has four factors: 1, 2, 43, 86
The first ten prime numbers are 2,3,5,7,11,13,17,19,23 and 29.
17 is a prime number and only has two factors, one and itself.
The first ten happy numbers are: 1, 7, 10, 13, 19, 23, 28, 31, 32, 44
28, 56, 84, 112, 140, 168, 196, 224, 252, 280.
To find the prime factors of 28 start with any factor pair of 28 and keep factoring the composite factors until all the factors are prime. 28 2 x 14 2 x 2 x 7 The three prime factors of 28 are 2, 2, 7.
But 2 has only two factors which are itself and one because it is a prime number.