Factors / Factors of 17

Factors of 17

1, 17

17 is prime: only factor pair is (1, 17), confirmed by trial division up to √17 ≈ 4.1 turning up nothing else. 17's full pair list is (1, 17), for 2 divisors in total. 17's divisors other than 17 itself sum to just 1, 16 below 17: the common deficient case. 17 is odd, digit sum 8 for 17; none of 2-12 divide 17 evenly. 17 has 2 divisors; 16 has 5 and 18 has 6, so 18 wins here. 17 divided by its largest divisor, 1, gives 17.