The factors of 15 are three and five. The factors of 15 are the numbers that 15 can be divided by to give a whole number. Because every number is divisible by itself and one, the numbers one and 15 are not usually defined as being factors of 15.
Know MoreThe numbers three and five are prime factors of 15, as they are both prime numbers. A prime number is a number that is only divisible by itself and one. Although 15 has only prime factors, many other numbers have both prime and nonprime factors. For example, two and three are prime factors of 12, and four and six are the nonprime factors of 12.
Learn MoreThe number 57 has four factors. These are 1, 3, 19 and 57. Factors of a number are numbers that can be multiplied to equal the given number.
Full Answer >The factors of the number 91 are 1, 7, 13 and 91. The factors of a number are obtained by dividing that number by other numbers. If a number is less than or equal to 91 and divides 91 exactly without leaving a remainder, it is a factor of 91.
Full Answer >The factors of 45 are 1, 3, 9, 15 and 45. A factor is a number or algebraic expression that divides into another number or expression evenly with no remainder.
Full Answer >The factors of 84 are (-1), (-2), (-3), (-4), (-6), (-7), (-12), (-14), (-21), (-28), (-42), (-84), 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42 and 84. To find the factors of a number, mathematicians find all of the possible number combinations that can be multiplied to give the number.
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