21402387

素因数分解:

$3^4\times {\mathrm{131}}^1\times {\mathrm{2017}}^1$

素因数の和:2160

約数の個数: 20

約数和(自身を含む): 32231496

約数和(自身を除く): 10829109

約数列:

[1, 3, 9, 27, 81, 131, 393, 1179, 2017, 3537, 6051, 10611, 18153, 54459, 163377, 264227, 792681, 2378043, 7134129, 21402387]

約数ペア:

[(1, 21402387), (3, 7134129), (9, 2378043), (27, 792681), (81, 264227), (131, 163377), (393, 54459), (1179, 18153), (2017, 10611), (3537, 6051)]