Factors / Factors of 27

Factors of 27

1, 3, 9, 27

27 breaks into 2 pairs, tested up to √27 ≈ 5.2; each pair multiplies back to 27 exactly. 27's full pair list is (1, 27), (3, 9), for 4 divisors in total. 27's divisors other than 27 itself sum to just 13, 14 below 27: the common deficient case. 27 is odd, digit sum 9 for 27; small divisors of 27 include 3, 9. 27 has 4 divisors; 26 has 4 and 28 has 6, so 28 wins here. 27 divided by its largest divisor, 9, gives 3.