19728486

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{359}}^1$

素因数の和:481

約数の個数: 48

約数和(自身を含む): 44478720

約数和(自身を除く): 24750234

約数列:

[1, 2, 3, 6, 9, 18, 43, 71, 86, 129, 142, 213, 258, 359, 387, 426, 639, 718, 774, 1077, 1278, 2154, 3053, 3231, 6106, 6462, 9159, 15437, 18318, 25489, 27477, 30874, 46311, 50978, 54954, 76467, 92622, 138933, 152934, 229401, 277866, 458802, 1096027, 2192054, 3288081, 6576162, 9864243, 19728486]

約数ペア:

[(1, 19728486), (2, 9864243), (3, 6576162), (6, 3288081), (9, 2192054), (18, 1096027), (43, 458802), (71, 277866), (86, 229401), (129, 152934), (142, 138933), (213, 92622), (258, 76467), (359, 54954), (387, 50978), (426, 46311), (639, 30874), (718, 27477), (774, 25489), (1077, 18318), (1278, 15437), (2154, 9159), (3053, 6462), (3231, 6106)]