# Definition of Factor

A factor is just a number that evenly divides another number.

Examples of factors
• 3 is a factor of 15 because $$15 \div 3$$ is a whole number (5).
• 6 is a factor of 18 because $$18 \div 6$$ is a whole number (3).
• 5 is a factor of 15 because $$15 \div 5$$ is a whole number (3).
• 2 is a factor of 12 because $$12 \div 2$$ is a whole number (6).
NON Examples of factors
• 3 is not a factor of 14 because $$14 \div 3$$ is not a whole number.
• 6 is not a factor of 22 because $$22 \div 6$$ is not a whole number.