21728201

素因数分解:

${\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{647}}^1$

素因数の和:772

約数の個数: 16

約数和(自身を含む): 24634368

約数和(自身を除く): 2906167

約数列:

[1, 11, 43, 71, 473, 647, 781, 3053, 7117, 27821, 33583, 45937, 306031, 505307, 1975291, 21728201]

約数ペア:

[(1, 21728201), (11, 1975291), (43, 505307), (71, 306031), (473, 45937), (647, 33583), (781, 27821), (3053, 7117)]