Factors / Factors of 133

Factors of 133

1, 7, 19, 133

133 breaks into 2 pairs, tested up to √133 ≈ 11.5; each pair multiplies back to 133 exactly. 133's full pair list is (1, 133), (7, 19), for 4 divisors in total. 133's divisors other than 133 itself sum to just 27, 106 below 133: the common deficient case. 133 is odd, digit sum 7 for 133; small divisors of 133 include 7. 133 has 4 divisors; 132 has 12 and 134 has 4, so 132 wins here. 133 divided by its largest divisor, 19, gives 7.