21193833

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{1697}}^1$

素因数の和:1904

約数の個数: 16

約数和(自身を含む): 29667456

約数和(自身を除く): 8473623

約数列:

[1, 3, 23, 69, 181, 543, 1697, 4163, 5091, 12489, 39031, 117093, 307157, 921471, 7064611, 21193833]

約数ペア:

[(1, 21193833), (3, 7064611), (23, 921471), (69, 307157), (181, 117093), (543, 39031), (1697, 12489), (4163, 5091)]