320 has 14 divisors.
The divisors of 23 are: 1, 23.
Sum of divisors: 1,392.
The divisors of 66 are 1,2,3,6,11,22,33 and 66.
The divisors of 79 are: 1, 79.
This question is easy and just takes logic. All numbers have at least 2 divisors, 1 and itself. So for a number to have 3 divisors, it must be a square number, with no other divisors. So this rules out even numbers. Square numbers above 100 are: 11 x 11 = 121 12 x 12 = 144 13 x 13 = 169 14 x 14 = 196 And so on. Already we can rule out 14 x 14 and 12 x 12 because they give us even results. So now lets look at 121 and 169. There is nothing below 11 that can divide evenly into 121 (except one) so therefore our answer is 121. 8) This question is easy and just takes logic. All numbers have at least 2 divisors, 1 and itself. So for a number to have 3 divisors, it must be a square number, with no other divisors. So this rules out even numbers. Square numbers above 100 are: 11 x 11 = 121 12 x 12 = 144 13 x 13 = 169 14 x 14 = 196 And so on. Already we can rule out 14 x 14 and 12 x 12 because they give us even results. So now lets look at 121 and 169. There is nothing below 11 that can divide evenly into 121 (except one) so therefore our answer is 121. 8)
Divisors are used to divide numbers.
2,4,8 (1 and 16 are divisors too, but the number and 1 are always divisors)
Sum of divisors = 91.
The divisors of 41231 are: 1, 41231.
12 has six divisors.
136 has eight divisors.
the divisors of 6 are: 1,2,3, and 6.
100,000 has 36 divisors.
84 has 12 divisors.
600 has 24 divisors.
The divisors of 61 are: 1, 61