Factors / Factors of 173

Factors of 173

1, 173

173 is prime: only factor pair is (1, 173), confirmed by trial division up to √173 ≈ 13.2 turning up nothing else. 173's full pair list is (1, 173), for 2 divisors in total. 173's divisors other than 173 itself sum to just 1, 172 below 173: the common deficient case. 173 is odd, digit sum 11 for 173; none of 2-12 divide 173 evenly. 173 has 2 divisors; 172 has 6 and 174 has 8, so 174 wins here. 173 divided by its largest divisor, 1, gives 173.