### Instruction: How many integers (positive and negative) are divisors of 20?### Response: To find the divisors of 20, I can start by listing the positive ones.
I know that 1 and 20 are divisors, since 20 = 1 * 20.
I also know that 2 and 10 are divisors, since 20 = 2 * 10.
And I know that 4 and 5 are divisors, since 20 = 4 * 5.
That's six positive divisors so far.
But what about the negative ones?
Well, for each positive divisor, there is a corresponding negative divisor, since 20 = (-1) * (-20) = (-2) * (-10) = (-4) * (-5).
So there are six negative divisors as well.
That means the total number of divisors, positive and negative, is 6 + 6 = 12.