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A whole number that can be divided cleanly into another whole number is called a factor of that number.

You can also look at this the other way around: if you can multiply two whole numbers to create a third number, those two numbers are factors of the third.

You will notice that 1 and the number itself are always factors of a given number.

A Note About Negatives

Everything said above also applies to negative whole numbers.

  • The factors of 10 are actually –1, 1, –2, 2, –5, 5, –10, and 10.
  • (–1 x –10 = 10, and –2 x –5 = 10.)
  • The factors of –10 are also –1, 1, –2, 2, –5, 5, –10, and 10.
  • (2 x –5 = –10, –2 x 5 = –10, and so on.)
  • This can be written more easily by using a combined + and – sign (±) to indicate that both the positive and negative versions of a number are factors. Thus, the factors of 10 can be written as ±1, ±2, ±5, and ±10.

Factors and Fractions

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Lowest Common Multiples

  • Lowest Common Multiples

TrendingHere are the facts and trivia that people are buzzing about.

Did Birds Evolve from Dinosaurs?

The Twelve Dancing Princesses

Current Events This Week: January 2023

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Andersen’s Fairy Tales: Contents

The Celtic Twilight: A Teller of Tales

TrendingHere are the facts and trivia that people are buzzing about.

Did Birds Evolve from Dinosaurs?

The Twelve Dancing Princesses

Current Events This Week: January 2023

African Americans by the Numbers

Andersen’s Fairy Tales: Contents

The Celtic Twilight: A Teller of Tales

  • Did Birds Evolve from Dinosaurs?
  • The Twelve Dancing Princesses
  • Current Events This Week: January 2023
  • African Americans by the Numbers
  • Andersen’s Fairy Tales: Contents
  • The Celtic Twilight: A Teller of Tales