Factors / Factors of 75

Factors of 75

1, 3, 5, 15, 25, 75

75 breaks into 3 pairs, tested up to √75 ≈ 8.7; each pair multiplies back to 75 exactly. 75's full pair list is (1, 75), (3, 25), (5, 15), for 6 divisors in total. 75's divisors other than 75 itself sum to just 49, 26 below 75: the common deficient case. 75 is odd, digit sum 12 for 75; small divisors of 75 include 3, 5. 75 has 6 divisors; 74 has 4 and 76 has 6, so 75 wins here. 75 divided by its largest divisor, 25, gives 3.