20181356

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{2381}}^1$

素因数の和:2561

約数の個数: 24

約数和(自身を含む): 38283504

約数和(自身を除く): 18102148

約数列:

[1, 2, 4, 13, 26, 52, 163, 326, 652, 2119, 2381, 4238, 4762, 8476, 9524, 30953, 61906, 123812, 388103, 776206, 1552412, 5045339, 10090678, 20181356]

約数ペア:

[(1, 20181356), (2, 10090678), (4, 5045339), (13, 1552412), (26, 776206), (52, 388103), (163, 123812), (326, 61906), (652, 30953), (2119, 9524), (2381, 8476), (4238, 4762)]