258241221

素因数分解:

$3^2\times 7^2\times {\mathrm{585581}}^1$

素因数の和:585601

約数の個数: 18

約数和(自身を含む): 433916262

約数和(自身を除く): 175675041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 585581, 1756743, 4099067, 5270229, 12297201, 28693469, 36891603, 86080407, 258241221]

約数ペア:

[(1, 258241221), (3, 86080407), (7, 36891603), (9, 28693469), (21, 12297201), (49, 5270229), (63, 4099067), (147, 1756743), (441, 585581)]