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.
Know MoreEvery 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.
Learn more about ArithmeticThe factors of 51 are 1, 3, 17 and 51. Therefore, 51 has a total of four factors. Every number has at least two factors, which include 1 and the number itself.
Full Answer >The factors of 42 are 1, 2, 3, 6, 7, 14, 21 and 42. These numbers are all of those used in multiplication for finding the result 42.
Full Answer >The factors of 70 are 1, 2, 5, 7, 10, 14, 35 and 70. They are the numbers that can be multiplied by one or more other numbers to get 70 as a product.
Full Answer >The factors of 10 are 1, 2, 5 and 10. These factors also include the negative numbers -1, -2, -5 and -10. A factor of a number is a whole number that can be divided from the original number resulting in a second whole number.
Full Answer >