18201393

素因数分解:

$3^2\times 7^2\times {\mathrm{149}}^1\times {\mathrm{277}}^1$

素因数の和:446

約数の個数: 36

約数和(自身を含む): 30899700

約数和(自身を除く): 12698307

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 149, 277, 441, 447, 831, 1043, 1341, 1939, 2493, 3129, 5817, 7301, 9387, 13573, 17451, 21903, 40719, 41273, 65709, 122157, 123819, 288911, 371457, 866733, 2022377, 2600199, 6067131, 18201393]

約数ペア:

[(1, 18201393), (3, 6067131), (7, 2600199), (9, 2022377), (21, 866733), (49, 371457), (63, 288911), (147, 123819), (149, 122157), (277, 65709), (441, 41273), (447, 40719), (831, 21903), (1043, 17451), (1341, 13573), (1939, 9387), (2493, 7301), (3129, 5817)]