21071258

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{2011}}^1$

素因数の和:2070

約数の個数: 24

約数和(自身を含む): 35346816

約数和(自身を除く): 14275558

約数列:

[1, 2, 13, 26, 31, 62, 169, 338, 403, 806, 2011, 4022, 5239, 10478, 26143, 52286, 62341, 124682, 339859, 679718, 810433, 1620866, 10535629, 21071258]

約数ペア:

[(1, 21071258), (2, 10535629), (13, 1620866), (26, 810433), (31, 679718), (62, 339859), (169, 124682), (338, 62341), (403, 52286), (806, 26143), (2011, 10478), (4022, 5239)]