Factors / Factors of 166

Factors of 166

1, 2, 83, 166

166 breaks into 2 pairs, tested up to √166 ≈ 12.9; each pair multiplies back to 166 exactly. 166's full pair list is (1, 166), (2, 83), for 4 divisors in total. 166's divisors other than 166 itself sum to just 86, 80 below 166: the common deficient case. 166 is even, digit sum 13 for 166; small divisors of 166 include 2. 166 has 4 divisors; 165 has 8 and 167 has 2, so 165 wins here. 166 divided by its largest divisor, 83, gives 2.