21000612321

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{911129}}^1$

素因数の和:911345

約数の個数: 24

約数和(自身を含む): 32833480680

約数和(自身を除く): 11832868359

約数列:

[1, 3, 9, 13, 39, 117, 197, 591, 1773, 2561, 7683, 23049, 911129, 2733387, 8200161, 11844677, 35534031, 106602093, 179492413, 538477239, 1615431717, 2333401369, 7000204107, 21000612321]

約数ペア:

[(1, 21000612321), (3, 7000204107), (9, 2333401369), (13, 1615431717), (39, 538477239), (117, 179492413), (197, 106602093), (591, 35534031), (1773, 11844677), (2561, 8200161), (7683, 2733387), (23049, 911129)]