In mathematics, the 'factors' of a number are simply all the integers (whole numbers) that can perfectly divide that number without leaving any remainder.
1 is the universal factor. It is a factor of every single number in existence.
Every number is a factor of itself.
The number 27 is a composite number. It has exactly 4 positive factors. The factors of 27 are: 1, 3, 9, and 27.
To find the factors, we test dividing 27 by numbers starting from 1:
Factors always come in pairs that multiply together to give the original number.
Prime factorization means breaking the number down until only prime numbers are left. Since 27 is $3 \times 9$, and 9 is $3 \times 3$: The prime factorization of 27 is: $3 \times 3 \times 3$ (or $3^3$).
Yes. While we usually only ask for positive factors in school, mathematically, two negative numbers multiplied together give a positive. So the negative factors of 27 are: -1, -3, -9, and -27.
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