21591309

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{2339}}^1$

素因数の和:2540

約数の個数: 16

約数和(自身を含む): 30663360

約数和(自身を除く): 9072051

約数列:

[1, 3, 17, 51, 181, 543, 2339, 3077, 7017, 9231, 39763, 119289, 423359, 1270077, 7197103, 21591309]

約数ペア:

[(1, 21591309), (3, 7197103), (17, 1270077), (51, 423359), (181, 119289), (543, 39763), (2339, 9231), (3077, 7017)]