21493863

素因数分解:

$3^3\times {\mathrm{349}}^1\times {\mathrm{2281}}^1$

素因数の和:2639

約数の個数: 16

約数和(自身を含む): 31948000

約数和(自身を除く): 10454137

約数列:

[1, 3, 9, 27, 349, 1047, 2281, 3141, 6843, 9423, 20529, 61587, 796069, 2388207, 7164621, 21493863]

約数ペア:

[(1, 21493863), (3, 7164621), (9, 2388207), (27, 796069), (349, 61587), (1047, 20529), (2281, 9423), (3141, 6843)]