Least Common Multiple (LCM) for 13 81 is 1,053.
The factors of 81 are 1, 3, 9, 27, and 81. The factors of 243 are 1, 3, 9, 27, 81, and 243. The common factors of 81 and 243 are 1, 3, 9, 27, and 81. Therefore, the least common factor (the smallest common factor) is 1.
The only common factor is 1
The factors of 64 are all 2s and the factors of 81 are all 3s. The greatest common factor is 1, since they have no factors in common. ■
The least common factor of any numbers is typically 1. The factors of 45 are 1, 3, 5, 9, 15, and 45. The factors of 81 are 1, 3, 9, 27, and 81. The common factors are 1, 3, and 9. The least (smallest) common factor is 1.
There cannot common factors of just one number. To be common there need to be at least two numbers.
The factors of 65 are: 1, 5, 13, 65The factors of 81 are: 1, 3, 9, 27, 81The only common factor is: 1
Assuming that least common refers to the least common multiple, LCM(27, 81) = 81
For 13: 13 For 81: 3
The Least Common Multiple of 9 and 81 is 81.
The common factors of 15 and 81 are 1 and 3
81 and 200 have no common prime factors.