20288619

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{13339}}^1$

素因数の和:13371

約数の個数: 18

約数和(自身を含む): 31735860

約数和(自身を除く): 11447241

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 13339, 40017, 120051, 173407, 520221, 1560663, 2254291, 6762873, 20288619]

約数ペア:

[(1, 20288619), (3, 6762873), (9, 2254291), (13, 1560663), (39, 520221), (117, 173407), (169, 120051), (507, 40017), (1521, 13339)]