They are multiples of 1, 3 and 9.
The prime factors of 81 are 3, 3, 3, and 3 - so the only two-digit factor is 27, which is 3 x 3 x 3.
1, 3 and 9
The Multiples of 27: 27, 54, 81, 108, 135, .... Factors of 27: 1, 3, 9, 27 and 35. (27 = 33)
Multiples of.... 3 - 57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96 & 99 4 - 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96 & 100 9 - 63, 72, 81, 90, 91 & 99
Between 81 and 84.
1, 3 and 9 are common factors of 27, 45 and 81. 27, 45 and 81 are multiples of 1, 3 and 9.
84, 87, 90, 93, 96, 99
The multiples of 243 is 1, 3, 9, 27, 81, and 243.
3 x 3 x 3 x 3
They are multiples of 1, 3, and 9.
The multiples of 81 are infinite. The factors of 81 are: 1, 3, 9, 27, 81.
45, 63, 81, 99 4 of them.
1,3,69,0 The above are FACTORS. Here are 3 multiples of 27: 27, 54, 81
They are multiples of 1, 3 and 9.
81, 84, 87.
Techcially all numbers are divisible by 81, however many would result in a decimal answer. If you mean how many numbers are divisible by 81 and have an integer answer, then it is "all multiples of 81" - e.g 81 x 2, 81 x 3 etc...81, 162, 243 and keep adding 81 forever.