Factors / Factors of 491

Factors of 491

1, 491

491 is prime: only factor pair is (1, 491), confirmed by trial division up to √491 ≈ 22.2 turning up nothing else. 491's full pair list is (1, 491), for 2 divisors in total. 491's divisors other than 491 itself sum to just 1, 490 below 491: the common deficient case. 491 is odd, digit sum 14 for 491; none of 2-12 divide 491 evenly. 491 has 2 divisors; 490 has 12 and 492 has 12, so 490 wins here. 491 divided by its largest divisor, 1, gives 491.