21551138

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:207

約数の個数: 64

約数和(自身を含む): 42467328

約数和(自身を除く): 20916190

約数列:

[1, 2, 7, 14, 17, 23, 31, 34, 46, 62, 119, 127, 161, 217, 238, 254, 322, 391, 434, 527, 713, 782, 889, 1054, 1426, 1778, 2159, 2737, 2921, 3689, 3937, 4318, 4991, 5474, 5842, 7378, 7874, 9982, 12121, 15113, 20447, 24242, 27559, 30226, 40894, 49657, 55118, 66929, 84847, 90551, 99314, 133858, 169694, 181102, 347599, 468503, 633857, 695198, 937006, 1267714, 1539367, 3078734, 10775569, 21551138]

約数ペア:

[(1, 21551138), (2, 10775569), (7, 3078734), (14, 1539367), (17, 1267714), (23, 937006), (31, 695198), (34, 633857), (46, 468503), (62, 347599), (119, 181102), (127, 169694), (161, 133858), (217, 99314), (238, 90551), (254, 84847), (322, 66929), (391, 55118), (434, 49657), (527, 40894), (713, 30226), (782, 27559), (889, 24242), (1054, 20447), (1426, 15113), (1778, 12121), (2159, 9982), (2737, 7874), (2921, 7378), (3689, 5842), (3937, 5474), (4318, 4991)]