18812709

素因数分解:

$3^3\times {\mathrm{641}}^1\times {\mathrm{1087}}^1$

素因数の和:1737

約数の個数: 16

約数和(自身を含む): 27939840

約数和(自身を除く): 9127131

約数列:

[1, 3, 9, 27, 641, 1087, 1923, 3261, 5769, 9783, 17307, 29349, 696767, 2090301, 6270903, 18812709]

約数ペア:

[(1, 18812709), (3, 6270903), (9, 2090301), (27, 696767), (641, 29349), (1087, 17307), (1923, 9783), (3261, 5769)]