21083439

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{1549}}^1$

素因数の和:1914

約数の個数: 16

約数和(自身を含む): 30380000

約数和(自身を除く): 9296561

約数列:

[1, 3, 13, 39, 349, 1047, 1549, 4537, 4647, 13611, 20137, 60411, 540601, 1621803, 7027813, 21083439]

約数ペア:

[(1, 21083439), (3, 7027813), (13, 1621803), (39, 540601), (349, 60411), (1047, 20137), (1549, 13611), (4537, 4647)]