13 is Prime number therefore it only has two divisors 1 and 13
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The divisors of 26 are the numbers that can divide 26 without leaving a remainder. In this case, the divisors of 26 are 1, 2, 13, and 26. This is because 1 and 26 are always divisors of any number, and 2 and 13 are the other pairs of numbers that multiply to give 26.
The lowest common multiple of 11 and 13 is 143 (11 X 13) because they have no common divisors.
1, 2, 3, 6, 13, 26, 39, 78
2,4,8 (1 and 16 are divisors too, but the number and 1 are always divisors)
12 has six divisors.