20468721

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{10711}}^1$

素因数の和:10741

約数の個数: 24

約数和(自身を含む): 34192704

約数和(自身を除く): 13723983

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 10711, 32133, 74977, 139243, 224931, 417729, 524839, 974701, 1574517, 2924103, 6822907, 20468721]

約数ペア:

[(1, 20468721), (3, 6822907), (7, 2924103), (13, 1574517), (21, 974701), (39, 524839), (49, 417729), (91, 224931), (147, 139243), (273, 74977), (637, 32133), (1911, 10711)]