21526479

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{20443}}^1$

素因数の和:20468

約数の個数: 20

約数和(自身を含む): 34632136

約数和(自身を除く): 13105657

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 20443, 61329, 183987, 265759, 551961, 797277, 1655883, 2391831, 7175493, 21526479]

約数ペア:

[(1, 21526479), (3, 7175493), (9, 2391831), (13, 1655883), (27, 797277), (39, 551961), (81, 265759), (117, 183987), (351, 61329), (1053, 20443)]