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 MoreThe 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.
Full Answer >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).
Full Answer >The factors of 121 are 1, 11 and 121. Therefore, 121 has a total of three factors. Every number has at least two factors: 1 and the number itself.
Full Answer >The factors of 120 are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60 and 120. Using a simple set of tests allows the discovery of all of these factors in a relatively short amount of time, according to What Are the Factors.
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