21781023

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{28697}}^1$

素因数の和:28734

約数の個数: 16

約数和(自身を含む): 33060096

約数和(自身を除く): 11279073

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 28697, 86091, 315667, 660031, 947001, 1980093, 7260341, 21781023]

約数ペア:

[(1, 21781023), (3, 7260341), (11, 1980093), (23, 947001), (33, 660031), (69, 315667), (253, 86091), (759, 28697)]