20490886

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{2381}}^1$

素因数の和:2727

約数の個数: 16

約数和(自身を含む): 33214608

約数和(自身を除く): 12723722

約数列:

[1, 2, 13, 26, 331, 662, 2381, 4303, 4762, 8606, 30953, 61906, 788111, 1576222, 10245443, 20490886]

約数ペア:

[(1, 20490886), (2, 10245443), (13, 1576222), (26, 788111), (331, 61906), (662, 30953), (2381, 8606), (4303, 4762)]