36 has nine of them.
A perfect number is the sum of its divisors; for example 6 is a perfect number because the sum of its divisors is 6 (1 + 2 + 3). The sum of the divisors of 8 is 7 (1 + 2 + 4), so 8 is not a perfect number.
Answer: 2008. d(n) is number of divisors of n. I give number of divisors and list them also. The divisors of n = 2008: 1, 2, 4, 8, 251, 502, 1004, 2008 d(2008) = 8 The divisors of n = 2009: 1, 7, 41, 49, 287, 2009 d(2009) = 6
1, 2, 4, 8.
64 has 7 divisors: 1 2 4 8 16 32 64.
15
24 (1,2,3,4,6,8,12 & 24)
The divisors of 64 are: 1 2 4 8 16 32 64.
The divisors of 8 are: 1, 2, 4, 8
There are 8 divisors of 105 (viz: 1, 3, 5, 7, 15, 21, 35, 105)
Least number with exactly n even divisors 1 -> 0 divisor 2 -> 1 divisor 4 -> 2 divisors = 22 8 -> 3 divisors = 23 12 -> 4 divisors = 22x3 32 -> 5 divisors = 24
No, 2 and 4 are the divisors of 8.
6, 8, 10, 14, 15