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.
Continue ReadingEvery 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 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 >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.
Full Answer >The number two is the only whole number factor of 64 because factors must be prime numbers, and all of the divisors of 64 except for the number one are divisible by two. The number 64 has four one-digit divisors, including one, two, four and eight. It also has three two-digit divisors, including 16, 32 and 64. It is the lowest positive number with seven divisors.
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