Factors / Factors of 209

Factors of 209

1, 11, 19, 209

209 breaks into 2 pairs, tested up to √209 ≈ 14.5; each pair multiplies back to 209 exactly. 209's full pair list is (1, 209), (11, 19), for 4 divisors in total. 209's divisors other than 209 itself sum to just 31, 178 below 209: the common deficient case. 209 is odd, digit sum 11 for 209; small divisors of 209 include 11. 209 has 4 divisors; 208 has 10 and 210 has 16, so 210 wins here. 209 divided by its largest divisor, 19, gives 11.