21116278

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{311}}^1\times {\mathrm{1997}}^1$

素因数の和:2327

約数の個数: 16

約数和(自身を含む): 33662304

約数和(自身を除く): 12546026

約数列:

[1, 2, 17, 34, 311, 622, 1997, 3994, 5287, 10574, 33949, 67898, 621067, 1242134, 10558139, 21116278]

約数ペア:

[(1, 21116278), (2, 10558139), (17, 1242134), (34, 621067), (311, 67898), (622, 33949), (1997, 10574), (3994, 5287)]