17720415

素因数分解:

$3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2833}}^1$

素因数の和:2983

約数の個数: 24

約数和(自身を含む): 30947280

約数和(自身を除く): 13226865

約数列:

[1, 3, 5, 9, 15, 45, 139, 417, 695, 1251, 2085, 2833, 6255, 8499, 14165, 25497, 42495, 127485, 393787, 1181361, 1968935, 3544083, 5906805, 17720415]

約数ペア:

[(1, 17720415), (3, 5906805), (5, 3544083), (9, 1968935), (15, 1181361), (45, 393787), (139, 127485), (417, 42495), (695, 25497), (1251, 14165), (2085, 8499), (2833, 6255)]