21972405

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{16097}}^1$

素因数の和:16125

約数の個数: 32

約数和(自身を含む): 43271424

約数和(自身を除く): 21299019

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 16097, 48291, 80485, 112679, 209261, 241455, 338037, 563395, 627783, 1046305, 1464827, 1690185, 3138915, 4394481, 7324135, 21972405]

約数ペア:

[(1, 21972405), (3, 7324135), (5, 4394481), (7, 3138915), (13, 1690185), (15, 1464827), (21, 1046305), (35, 627783), (39, 563395), (65, 338037), (91, 241455), (105, 209261), (195, 112679), (273, 80485), (455, 48291), (1365, 16097)]