What is a common factor-?

Answer 1

A common factor is a factor that is common to 2 or more numbers.

Examples:

Common factors of 4 and 6 are: 1 and 2

Common factors of 15 and 25 are: 1 and 5

Common factors of 16 and 24 are: 1, 2, 4, and 8.

Common factors of 28 and 42 are: 1, 2, 7 and 14.

A common factor is a number that will divide two or more other numbers without leaving a remainder. For example, 3 is a common factor of 3, 6, and 21.

List the factors of two numbers. Any number that appears on both lists is a common factor.

All numbers have factors. Some numbers have some of the same factors as other numbers. These are known as common factors. 2 is a common factor of 4 and 6.
All non-zero numbers have factors. Some numbers have the same factors as other numbers. They are said to have those numbers "in common," which was shortened to common factors.

Answer 2

-- A "factor" of a number is another number that can divide evenly into the first one,

with no remainder.

-- "Common" means "same for both".

-- A "common" factor of two numbers is another number that can divide evenly into

either one of them, with no remainder.

Answer 3

All integers have factors. Some integers have some of the same factors as other integers. These are known as common factors.

3 is a common factor of 6 and 9.

Answer 4

Common factor is two numbers that are common. This is a mathematical question.

Answer 5

A "common factor factor" is not a mathematical term.

Answer 6

A common factor of a set of integers is any integer which goes evenly into each member of the set.