Factors / Factors of 441

Factors of 441

1, 3, 7, 9, 21, 49, 63, 147, 441

441 is a perfect square (21² = 441); that gives 441 an odd 9-divisor count, since only 21 pairs with itself. 441's full pair list is (1, 441), (3, 147), (7, 63), (9, 49), (21, 21), for 9 divisors in total. 441's divisors other than 441 itself sum to just 300, 141 below 441: the common deficient case. 441 is odd, digit sum 9 for 441; small divisors of 441 include 3, 7, 9. 441 has 9 divisors; 440 has 16 and 442 has 8, so 440 wins here. 441 divided by its largest divisor, 147, gives 3.