25641279

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{16661}}^1$

素因数の和:16692

約数の個数: 20

約数和(自身を含む): 40322040

約数和(自身を除く): 14680761

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 16661, 49983, 149949, 316559, 449847, 949677, 1349541, 2849031, 8547093, 25641279]

約数ペア:

[(1, 25641279), (3, 8547093), (9, 2849031), (19, 1349541), (27, 949677), (57, 449847), (81, 316559), (171, 149949), (513, 49983), (1539, 16661)]