21377493

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{18413}}^1$

素因数の和:18465

約数の個数: 16

約数和(自身を含む): 32408640

約数和(自身を除く): 11031147

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 18413, 55239, 165717, 497151, 791759, 2375277, 7125831, 21377493]

約数ペア:

[(1, 21377493), (3, 7125831), (9, 2375277), (27, 791759), (43, 497151), (129, 165717), (387, 55239), (1161, 18413)]