Factors / Factors of 501

Factors of 501

1, 3, 167, 501

501 breaks into 2 pairs, tested up to √501 ≈ 22.4; each pair multiplies back to 501 exactly. 501's full pair list is (1, 501), (3, 167), for 4 divisors in total. 501's divisors other than 501 itself sum to just 171, 330 below 501: the common deficient case. 501 is odd, digit sum 6 for 501; small divisors of 501 include 3. 501 has 4 divisors; 500 has 12 and 502 has 4, so 500 wins here. 501 divided by its largest divisor, 167, gives 3.