21399352

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{205763}}^1$

素因数の和:205782

約数の個数: 16

約数和(自身を含む): 43210440

約数和(自身を除く): 21811088

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 205763, 411526, 823052, 1646104, 2674919, 5349838, 10699676, 21399352]

約数ペア:

[(1, 21399352), (2, 10699676), (4, 5349838), (8, 2674919), (13, 1646104), (26, 823052), (52, 411526), (104, 205763)]