Factoring - The Factor Chart

What are the positive factors of 16?

Correct. To find the positive factors of a number, find the factors up to the square root of the number. For 16, we need to check the integers up to 4: the factors of 16 up to 4 are 1, 2, and 4. Each factor has another factor with which it yields the product 16: >$$16=1\cdot16$$ >$$16=2\cdot8$$ >$$16=4\cdot4$$. That gives us these 5 factors: 1, 2, 4, 8, and 16.

Incorrect. You are asked to find all the positive factors and not the prime factors!

Incorrect. Don't forget that an integer is always a factor of itself.

Incorrect. Don't forget that 1 is a factor of all integers.

2, 2, 2, and 2

1, 2, 4, and 8

2 and 8

1, 2, 4, 8, and 16