Factors / Factors of 180

Factors of 180

1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180

180 breaks into 9 pairs, tested up to √180 ≈ 13.4; each pair multiplies back to 180 exactly. 180's full pair list is (1, 180), (2, 90), (3, 60), (4, 45), (5, 36), (6, 30), (9, 20), (10, 18), (12, 15), for 18 divisors in total. 180's divisors other than 180 itself sum to 366, 186 above 180: abundant. 180 is even, digit sum 9 for 180; small divisors of 180 include 2, 3, 4, 5, 6. 180 has 18 divisors; 179 has 2 and 181 has 2, so 180 wins here. 180 divided by its largest divisor, 90, gives 2.