Factors / Factors of 198

Factors of 198

1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198

198 breaks into 6 pairs, tested up to √198 ≈ 14.1; each pair multiplies back to 198 exactly. 198's full pair list is (1, 198), (2, 99), (3, 66), (6, 33), (9, 22), (11, 18), for 12 divisors in total. 198's divisors other than 198 itself sum to 270, 72 above 198: abundant. 198 is even, digit sum 18 for 198; small divisors of 198 include 2, 3, 6, 9, 11. 198 has 12 divisors; 197 has 2 and 199 has 2, so 198 wins here. 198 divided by its largest divisor, 99, gives 2.