Factors / Factors of 313

Factors of 313

1, 313

313 is prime: only factor pair is (1, 313), confirmed by trial division up to √313 ≈ 17.7 turning up nothing else. 313's full pair list is (1, 313), for 2 divisors in total. 313's divisors other than 313 itself sum to just 1, 312 below 313: the common deficient case. 313 is odd, digit sum 7 for 313; none of 2-12 divide 313 evenly. 313 has 2 divisors; 312 has 16 and 314 has 4, so 312 wins here. 313 divided by its largest divisor, 1, gives 313.