20883681

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{593}}^1$

素因数の和:662

約数の個数: 48

約数和(自身を含む): 38054016

約数和(自身を除く): 17170335

約数列:

[1, 3, 7, 9, 13, 21, 39, 43, 63, 91, 117, 129, 273, 301, 387, 559, 593, 819, 903, 1677, 1779, 2709, 3913, 4151, 5031, 5337, 7709, 11739, 12453, 23127, 25499, 35217, 37359, 53963, 69381, 76497, 161889, 178493, 229491, 331487, 485667, 535479, 994461, 1606437, 2320409, 2983383, 6961227, 20883681]

約数ペア:

[(1, 20883681), (3, 6961227), (7, 2983383), (9, 2320409), (13, 1606437), (21, 994461), (39, 535479), (43, 485667), (63, 331487), (91, 229491), (117, 178493), (129, 161889), (273, 76497), (301, 69381), (387, 53963), (559, 37359), (593, 35217), (819, 25499), (903, 23127), (1677, 12453), (1779, 11739), (2709, 7709), (3913, 5337), (4151, 5031)]