21875217

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{11447}}^1$

素因数の和:11477

約数の個数: 24

約数和(自身を含む): 36542016

約数和(自身を除く): 14666799

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 11447, 34341, 80129, 148811, 240387, 446433, 560903, 1041677, 1682709, 3125031, 7291739, 21875217]

約数ペア:

[(1, 21875217), (3, 7291739), (7, 3125031), (13, 1682709), (21, 1041677), (39, 560903), (49, 446433), (91, 240387), (147, 148811), (273, 80129), (637, 34341), (1911, 11447)]