21019388

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{9859}}^1$

素因数の和:9917

約数の個数: 24

約数和(自身を含む): 40583760

約数和(自身を除く): 19564372

約数列:

[1, 2, 4, 13, 26, 41, 52, 82, 164, 533, 1066, 2132, 9859, 19718, 39436, 128167, 256334, 404219, 512668, 808438, 1616876, 5254847, 10509694, 21019388]

約数ペア:

[(1, 21019388), (2, 10509694), (4, 5254847), (13, 1616876), (26, 808438), (41, 512668), (52, 404219), (82, 256334), (164, 128167), (533, 39436), (1066, 19718), (2132, 9859)]