Factors / Factors of 253

Factors of 253

1, 11, 23, 253

253 breaks into 2 pairs, tested up to √253 ≈ 15.9; each pair multiplies back to 253 exactly. 253's full pair list is (1, 253), (11, 23), for 4 divisors in total. 253's divisors other than 253 itself sum to just 35, 218 below 253: the common deficient case. 253 is odd, digit sum 10 for 253; small divisors of 253 include 11. 253 has 4 divisors; 252 has 18 and 254 has 4, so 252 wins here. 253 divided by its largest divisor, 23, gives 11.