21142221

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{2339}}^1$

素因数の和:2496

約数の個数: 16

約数和(自身を含む): 29652480

約数和(自身を除く): 8510259

約数列:

[1, 3, 23, 69, 131, 393, 2339, 3013, 7017, 9039, 53797, 161391, 306409, 919227, 7047407, 21142221]

約数ペア:

[(1, 21142221), (3, 7047407), (23, 919227), (69, 306409), (131, 161391), (393, 53797), (2339, 9039), (3013, 7017)]