20165546565

素因数分解:

$3^4\times 5^1\times {\mathrm{49791473}}^1$

素因数の和:49791490

約数の個数: 20

約数和(自身を含む): 36148610124

約数和(自身を除く): 15983063559

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 49791473, 149374419, 248957365, 448123257, 746872095, 1344369771, 2240616285, 4033109313, 6721848855, 20165546565]

約数ペア:

[(1, 20165546565), (3, 6721848855), (5, 4033109313), (9, 2240616285), (15, 1344369771), (27, 746872095), (45, 448123257), (81, 248957365), (135, 149374419), (405, 49791473)]