Factors / Factors of 345

Factors of 345

1, 3, 5, 15, 23, 69, 115, 345

345 breaks into 4 pairs, tested up to √345 ≈ 18.6; each pair multiplies back to 345 exactly. 345's full pair list is (1, 345), (3, 115), (5, 69), (15, 23), for 8 divisors in total. 345's divisors other than 345 itself sum to just 231, 114 below 345: the common deficient case. 345 is odd, digit sum 12 for 345; small divisors of 345 include 3, 5. 345 has 8 divisors; 344 has 8 and 346 has 4, so 344 wins here. 345 divided by its largest divisor, 115, gives 3.