Factors of 81
Answer
Factors: 1, 3, 9, 27, 81
Number of factors: 5
Factor pairs: (1, 81), (3, 27), (9, 9)
Prime Factorization
81 = 34
Properties
- This number is not prime
- This number is a perfect square
- This is an odd number
- Sum of all factors: 121
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Understanding the Factors of 81
When we look at the number 81, we find that it has 5 factors in total. These are the numbers that divide evenly into 81 with no remainder.
This number is composite, meaning it has more than two factors. It can be written as the product of its prime factors: 34.
Factor Pairs
The factors of 81 can be arranged in pairs: (1, 81), (3, 27), (9, 9). Each pair multiplies to give 81.