18821818

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:370

約数の個数: 24

約数和(自身を含む): 30175200

約数和(自身を除く): 11353382

約数列:

[1, 2, 19, 38, 131, 199, 262, 361, 398, 722, 2489, 3781, 4978, 7562, 26069, 47291, 52138, 71839, 94582, 143678, 495311, 990622, 9410909, 18821818]

約数ペア:

[(1, 18821818), (2, 9410909), (19, 990622), (38, 495311), (131, 143678), (199, 94582), (262, 71839), (361, 52138), (398, 47291), (722, 26069), (2489, 7562), (3781, 4978)]