20666385

素因数分解:

$3^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{1301}}^1$

素因数の和:1665

約数の個数: 24

約数和(自身を含む): 35950824

約数和(自身を除く): 15284439

約数列:

[1, 3, 5, 9, 15, 45, 353, 1059, 1301, 1765, 3177, 3903, 5295, 6505, 11709, 15885, 19515, 58545, 459253, 1377759, 2296265, 4133277, 6888795, 20666385]

約数ペア:

[(1, 20666385), (3, 6888795), (5, 4133277), (9, 2296265), (15, 1377759), (45, 459253), (353, 58545), (1059, 19515), (1301, 15885), (1765, 11709), (3177, 6505), (3903, 5295)]