3. 246

The number 246 is an even number because it is divisible by 2 without leaving a remainder. It can be written as the product of its prime factors:

246 = 2 * 3 * 41

To find the factors of 246, we can start by finding the factors of the number 123, which is half of 246. The factors of 123 are 1, 3, 41, and 123. By multiplying each of these factors by 2, we get the factors of 246:

1 * 2 = 2 3 * 2 = 6 41 * 2 = 82 123 * 2 = 246

So the factors of 246 are 1, 2, 3, 6, 41, 82, 123, and 246.