Factors / Factors of 178

Factors of 178

1, 2, 89, 178

178 breaks into 2 pairs, tested up to √178 ≈ 13.3; each pair multiplies back to 178 exactly. 178's full pair list is (1, 178), (2, 89), for 4 divisors in total. 178's divisors other than 178 itself sum to just 92, 86 below 178: the common deficient case. 178 is even, digit sum 16 for 178; small divisors of 178 include 2. 178 has 4 divisors; 177 has 4 and 179 has 2, so 177 wins here. 178 divided by its largest divisor, 89, gives 2.