Factors / Factors of 515

Factors of 515

1, 5, 103, 515

515 breaks into 2 pairs, tested up to √515 ≈ 22.7; each pair multiplies back to 515 exactly. 515's full pair list is (1, 515), (5, 103), for 4 divisors in total. 515's divisors other than 515 itself sum to just 109, 406 below 515: the common deficient case. 515 is odd, digit sum 11 for 515; small divisors of 515 include 5. 515 has 4 divisors; 514 has 4 and 516 has 12, so 516 wins here. 515 divided by its largest divisor, 103, gives 5.