Q:

What are the factors of 81?

A:

The factors of 81 are 1, 3, 9, 27 and 81. If a number is divisible by another number, it is a factor of the given number. If there is a remainder, it cannot be a factor of the given number.

Keep Learning

Every number is a factor of itself. The number one is a factor of every number. Thus, every number except 1 has at least two factors. Prime factors are numbers that are factors and prime at the same time. The number 81 has five factors but only one prime factor, the number 3. Factorization is very important in algebra.

Sources:

Related Questions

• A:

The factors of 56 are 1, 2, 4, 7, 8, 14, 28 and 56. Of these factors, 1, 2 and 7 are prime numbers. Therefore, they are the prime factors of 56.

Filed Under:
• A:

The factors of 90 are one, two, three, five, six, nine, 10, 15, 18, 30, 45 and 90. Factors are whole number that can divide into another number leaving no remainder (no decimals).

Filed Under:
• A:

Find all the factors of 60 by identifying each integer that divides evenly into 60. Begin by finding two factors, such as four and 15. Then find the factors of these factors. Four would divide into one, two and four. Fifteen would divide into one, three, five and 15.