Factors / Factors of 30

Factors of 30

1, 2, 3, 5, 6, 10, 15, 30

30 breaks into 4 pairs, tested up to √30 ≈ 5.5; each pair multiplies back to 30 exactly. 30's full pair list is (1, 30), (2, 15), (3, 10), (5, 6), for 8 divisors in total. 30's divisors other than 30 itself sum to 42, 12 above 30: abundant. 30 is even, digit sum 3 for 30; small divisors of 30 include 2, 3, 5, 6, 10. 30 has 8 divisors; 29 has 2 and 31 has 2, so 30 wins here. 30 divided by its largest divisor, 15, gives 2.