18820485

素因数分解:

$3^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1279}}^1$

素因数の和:1402

約数の個数: 32

約数和(自身を含む): 33792000

約数和(自身を除く): 14971515

約数列:

[1, 3, 5, 9, 15, 27, 45, 109, 135, 327, 545, 981, 1279, 1635, 2943, 3837, 4905, 6395, 11511, 14715, 19185, 34533, 57555, 139411, 172665, 418233, 697055, 1254699, 2091165, 3764097, 6273495, 18820485]

約数ペア:

[(1, 18820485), (3, 6273495), (5, 3764097), (9, 2091165), (15, 1254699), (27, 697055), (45, 418233), (109, 172665), (135, 139411), (327, 57555), (545, 34533), (981, 19185), (1279, 14715), (1635, 11511), (2943, 6395), (3837, 4905)]