19928655

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{15271}}^1$

素因数の和:15311

約数の個数: 24

約数和(自身を含む): 35736480

約数和(自身を除く): 15807825

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 145, 261, 435, 1305, 15271, 45813, 76355, 137439, 229065, 442859, 687195, 1328577, 2214295, 3985731, 6642885, 19928655]

約数ペア:

[(1, 19928655), (3, 6642885), (5, 3985731), (9, 2214295), (15, 1328577), (29, 687195), (45, 442859), (87, 229065), (145, 137439), (261, 76355), (435, 45813), (1305, 15271)]