There is an infinite number of common multiples for 13 and 81. A common multiple of any two or more numbers is any number into which each of two or more numbers can be divided evenly (zero remainder). However, the least or lowest common multiple of 13 and 81 is 1,053.
52 = 4 x 13 = 22 x 1381 = 9 x 9 = 34Since 52 and 81 do not have any common prime factor, then 52 x 81 = 4,212 is their LCM. So that the other multiples they have in common are all the multiples of 4,212.
81, 162, 243 and so on.
1, 3 and 9 are common factors of 27, 45 and 81. 27, 45 and 81 are multiples of 1, 3 and 9.
Multiples of 13 include 13, 26, 39 and so on. For them to be common, they need to be compared to another set of multiples.
Common multiples include any multiple of 405.
They are all multiples of 9. Their common multiples are 405, 810, 1215 and so on.
The least common multiples of 5, 11, and 13 is 715.
1, 9, and 81 are the only multiples of 81
Multiples of 27 include 27, 54, 81 and so on. For them to be common, they need to be compared to another set of multiples.
Least Common Multiple (LCM) for 13 81 is 1,053.
The common multiples of 6 and 13 are the infinite set of multiples of their LCM, which is 78. So the common multiples of 6 and 13 are 78, 156, 234, 312, 390, and so on.
GCD: 27 LCM: 162 All common factors of 81 and 54 are all multiples of their LCM.