Factors / Factors of 445

Factors of 445

1, 5, 89, 445

445 breaks into 2 pairs, tested up to √445 ≈ 21.1; each pair multiplies back to 445 exactly. 445's full pair list is (1, 445), (5, 89), for 4 divisors in total. 445's divisors other than 445 itself sum to just 95, 350 below 445: the common deficient case. 445 is odd, digit sum 13 for 445; small divisors of 445 include 5. 445 has 4 divisors; 444 has 12 and 446 has 4, so 444 wins here. 445 divided by its largest divisor, 89, gives 5.