integer,
whole number any of the natural numbers (positive or negative) or zero; "an integer is a number that is not a fraction"
prime factor the prime factors of a quantity are all of the prime quantities that will exactly divide the given quantity
equivalent-binary-digit factor the average number of binary digits needed to express one radix digit in a numeration system that is not binary; on the average a number that can be expressed in N decimal digits takes 3.3N binary digits
divisor -
the number by which a dividend is divided
number an item of merchandise offered for sale; "she preferred the black nylon number"; "this sweater is an all-wool number"