21356727

素因数分解:

$3^1\times 7^1\times {\mathrm{683}}^1\times {\mathrm{1489}}^1$

素因数の和:2182

約数の個数: 16

約数和(自身を含む): 32613120

約数和(自身を除く): 11256393

約数列:

[1, 3, 7, 21, 683, 1489, 2049, 4467, 4781, 10423, 14343, 31269, 1016987, 3050961, 7118909, 21356727]

約数ペア:

[(1, 21356727), (3, 7118909), (7, 3050961), (21, 1016987), (683, 31269), (1489, 14343), (2049, 10423), (4467, 4781)]