20851216

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{30307}}^1$

素因数の和:30358

約数の個数: 20

約数和(自身を含む): 41340112

約数和(自身を除く): 20488896

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 30307, 60614, 121228, 242456, 484912, 1303201, 2606402, 5212804, 10425608, 20851216]

約数ペア:

[(1, 20851216), (2, 10425608), (4, 5212804), (8, 2606402), (16, 1303201), (43, 484912), (86, 242456), (172, 121228), (344, 60614), (688, 30307)]