18863481

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{9871}}^1$

素因数の和:9901

約数の個数: 24

約数和(自身を含む): 31511424

約数和(自身を除く): 12647943

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 9871, 29613, 69097, 128323, 207291, 384969, 483679, 898261, 1451037, 2694783, 6287827, 18863481]

約数ペア:

[(1, 18863481), (3, 6287827), (7, 2694783), (13, 1451037), (21, 898261), (39, 483679), (49, 384969), (91, 207291), (147, 128323), (273, 69097), (637, 29613), (1911, 9871)]