Factors / Factors of 57

Factors of 57

1, 3, 19, 57

57 breaks into 2 pairs, tested up to √57 ≈ 7.5; each pair multiplies back to 57 exactly. 57's full pair list is (1, 57), (3, 19), for 4 divisors in total. 57's divisors other than 57 itself sum to just 23, 34 below 57: the common deficient case. 57 is odd, digit sum 12 for 57; small divisors of 57 include 3. 57 has 4 divisors; 56 has 8 and 58 has 4, so 56 wins here. 57 divided by its largest divisor, 19, gives 3.