20358909

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1697}}^1$

素因数の和:1777

約数の個数: 24

約数和(自身を含む): 31080192

約数和(自身を除く): 10721283

約数列:

[1, 3, 9, 31, 43, 93, 129, 279, 387, 1333, 1697, 3999, 5091, 11997, 15273, 52607, 72971, 157821, 218913, 473463, 656739, 2262101, 6786303, 20358909]

約数ペア:

[(1, 20358909), (3, 6786303), (9, 2262101), (31, 656739), (43, 473463), (93, 218913), (129, 157821), (279, 72971), (387, 52607), (1333, 15273), (1697, 11997), (3999, 5091)]