20575737

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1$

素因数の和:167

約数の個数: 72

約数和(自身を含む): 38632776

約数和(自身を除く): 18057039

約数列:

[1, 3, 7, 9, 13, 21, 37, 39, 49, 63, 91, 97, 111, 117, 147, 259, 273, 291, 333, 441, 481, 637, 679, 777, 819, 873, 1261, 1443, 1813, 1911, 2037, 2331, 3367, 3589, 3783, 4329, 4753, 5439, 5733, 6111, 8827, 10101, 10767, 11349, 14259, 16317, 23569, 25123, 26481, 30303, 32301, 42777, 46657, 61789, 70707, 75369, 79443, 139971, 175861, 185367, 212121, 226107, 326599, 419913, 527583, 556101, 979797, 1582749, 2286193, 2939391, 6858579, 20575737]

約数ペア:

[(1, 20575737), (3, 6858579), (7, 2939391), (9, 2286193), (13, 1582749), (21, 979797), (37, 556101), (39, 527583), (49, 419913), (63, 326599), (91, 226107), (97, 212121), (111, 185367), (117, 175861), (147, 139971), (259, 79443), (273, 75369), (291, 70707), (333, 61789), (441, 46657), (481, 42777), (637, 32301), (679, 30303), (777, 26481), (819, 25123), (873, 23569), (1261, 16317), (1443, 14259), (1813, 11349), (1911, 10767), (2037, 10101), (2331, 8827), (3367, 6111), (3589, 5733), (3783, 5439), (4329, 4753)]