A factor of a number is defined as a whole number that divides exactly into that number, leaving no remainder. This means that every number is a factor of ___ itself.

Itself

What are the factors of 20?

1, 2, 4, 5, 10, and 20

True or False: 1 is a factor of every number.

True

What property of factors states that every factor of a number divides that number exactly?

Every factor of a number divides that number exactly.

If a number is 15, what are its pairs of factors?

1 and 15, 3 and 5

Fill in the blank: The factors of 6 are ___ and ___.

1, 2, 3, and 6

Riddle: I am always smaller than my parent number and can be used to build it. What am I?

A factor

Fill in the blank: Every number is a multiple of ___.

1

True or False: Zero is not a multiple of any number.

False. Zero is a multiple of every number.

What can be said about the multiples of a number in relation to its factors?

Every multiple except zero is either equal to or greater than any of its factors.

What is the unique property of the multiples of a number?

There is no end to the multiples of a number; they continue indefinitely.

Multiples are generated by multiplying a number by what type of values?

Whole numbers

Fill in the blank: The product of two or more factors is a ___ of each factor.

Multiple

Fill in the blank: The multiples of 5 include 5, 10, 15, and ___.

20

True or False: The number 28 is a perfect number because its divisors 1, 2, 4, 7, and 14 sum to 28.

True

Fill in the blank: The sum of the proper divisors of 28, which are ___, equals 28.

1, 2, 4, 7, and 14