18726543

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 31135104

約数和(自身を除く): 12408561

約数列:

[1, 3, 9, 11, 33, 43, 53, 83, 99, 129, 159, 249, 387, 473, 477, 583, 747, 913, 1419, 1749, 2279, 2739, 3569, 4257, 4399, 5247, 6837, 8217, 10707, 13197, 20511, 25069, 32121, 39259, 39591, 48389, 75207, 117777, 145167, 189157, 225621, 353331, 435501, 567471, 1702413, 2080727, 6242181, 18726543]

約数ペア:

[(1, 18726543), (3, 6242181), (9, 2080727), (11, 1702413), (33, 567471), (43, 435501), (53, 353331), (83, 225621), (99, 189157), (129, 145167), (159, 117777), (249, 75207), (387, 48389), (473, 39591), (477, 39259), (583, 32121), (747, 25069), (913, 20511), (1419, 13197), (1749, 10707), (2279, 8217), (2739, 6837), (3569, 5247), (4257, 4399)]