Just 1.
1, 2, 13, 26.
26 = 2 x 13
Factors of 39: 1, 3, 13, 39 Factors of 26: 1, 2, 13, 26 Common factors: 1, 13.
26 can go into 115 four times with a remainder of 11.
Any of its factors which are: 1 2 13 and 26
1 and 11 (11 is a prime number).
11 is a prime number, so the factors are 1 and 11
The general factors or divisors of 187 are 187, 17, 11 and 1. The prime factors are 11 and 17.
11 with remainder 12.
26 \
11 with remainder 26.
The factors of 11 are 1, 11. 11 is prime because its only factors are 1 and 11 (itself.)