Factors / Factors of 111

Factors of 111

1, 3, 37, 111

111 breaks into 2 pairs, tested up to √111 ≈ 10.5; each pair multiplies back to 111 exactly. 111's full pair list is (1, 111), (3, 37), for 4 divisors in total. 111's divisors other than 111 itself sum to just 41, 70 below 111: the common deficient case. 111 is odd, digit sum 3 for 111; small divisors of 111 include 3. 111 has 4 divisors; 110 has 8 and 112 has 10, so 112 wins here. 111 divided by its largest divisor, 37, gives 3.