21091629

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{12577}}^1$

素因数の和:12636

約数の個数: 16

約数和(自身を含む): 30992192

約数和(自身を除く): 9900563

約数列:

[1, 3, 13, 39, 43, 129, 559, 1677, 12577, 37731, 163501, 490503, 540811, 1622433, 7030543, 21091629]

約数ペア:

[(1, 21091629), (3, 7030543), (13, 1622433), (39, 540811), (43, 490503), (129, 163501), (559, 37731), (1677, 12577)]