A factor is a number that is multiplied. Any number can be a factor. If a number is a product of factors , each of the factors is called a divisor or a factor of that number.
Example:
180 = 3 * 10 * 6 , so 3 , 10 and 6 are factors or divisors of 180.
Also 180 = 2 * 5* 18 , so 2,5, and 18 are also factors of 180.
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All numbers have factors. Some numbers have some of the same factors as other numbers. These are known as common factors.
Numbers that have only 2 factors are prime numbers
Some even numbers have more factors than some odd numbers and some odd numbers have more factors than some even numbers. As a group, even numbers have more factors than odd numbers.
Some even numbers have more factors than some odd numbers and some odd numbers have more factors than some even numbers. As a group, even numbers have more factors than odd numbers.
Composite numbers have more than 2 factors.