20987463

素因数分解:

$3^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{12041}}^1$

素因数の和:12134

約数の個数: 16

約数和(自身を含む): 32368896

約数和(自身を除く): 11381433

約数列:

[1, 3, 7, 21, 83, 249, 581, 1743, 12041, 36123, 84287, 252861, 999403, 2998209, 6995821, 20987463]

約数ペア:

[(1, 20987463), (3, 6995821), (7, 2998209), (21, 999403), (83, 252861), (249, 84287), (581, 36123), (1743, 12041)]