257480496

素因数分解:

$2^4\times 3^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{401}}^1$

素因数の和:449

約数の個数: 240

約数和(自身を含む): 907233600

約数和(自身を除く): 649753104

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 16, 18, 21, 24, 26, 28, 36, 39, 42, 48, 49, 52, 56, 63, 72, 78, 84, 91, 98, 104, 112, 117, 126, 144, 147, 156, 168, 182, 196, 208, 234, 252, 273, 294, 312, 336, 343, 364, 392, 401, 441, 468, 504, 546, 588, 624, 637, 686, 728, 784, 802, 819, 882, 936, 1008, 1029, 1092, 1176, 1203, 1274, 1372, 1456, 1604, 1638, 1764, 1872, 1911, 2058, 2184, 2352, 2406, 2548, 2744, 2807, 3087, 3208, 3276, 3528, 3609, 3822, 4116, 4368, 4459, 4812, 5096, 5213, 5488, 5614, 5733, 6174, 6416, 6552, 7056, 7218, 7644, 8232, 8421, 8918, 9624, 10192, 10426, 11228, 11466, 12348, 13104, 13377, 14436, 15288, 15639, 16464, 16842, 17836, 19248, 19649, 20852, 22456, 22932, 24696, 25263, 26754, 28872, 30576, 31278, 33684, 35672, 36491, 39298, 40131, 41704, 44912, 45864, 46917, 49392, 50526, 53508, 57744, 58947, 62556, 67368, 71344, 72982, 78596, 80262, 83408, 91728, 93834, 101052, 107016, 109473, 117894, 125112, 134736, 137543, 145964, 157192, 160524, 176841, 187668, 202104, 214032, 218946, 235788, 250224, 255437, 275086, 291928, 314384, 321048, 328419, 353682, 375336, 404208, 412629, 437892, 471576, 510874, 550172, 583856, 642096, 656838, 707364, 750672, 766311, 825258, 875784, 943152, 1021748, 1100344, 1237887, 1313676, 1414728, 1532622, 1650516, 1751568, 1788059, 2043496, 2200688, 2298933, 2475774, 2627352, 2829456, 3065244, 3301032, 3576118, 4086992, 4597866, 4951548, 5254704, 5364177, 6130488, 6602064, 7152236, 9195732, 9903096, 10728354, 12260976, 14304472, 16092531, 18391464, 19806192, 21456708, 28608944, 32185062, 36782928, 42913416, 64370124, 85826832, 128740248, 257480496]

約数ペア:

[(1, 257480496), (2, 128740248), (3, 85826832), (4, 64370124), (6, 42913416), (7, 36782928), (8, 32185062), (9, 28608944), (12, 21456708), (13, 19806192), (14, 18391464), (16, 16092531), (18, 14304472), (21, 12260976), (24, 10728354), (26, 9903096), (28, 9195732), (36, 7152236), (39, 6602064), (42, 6130488), (48, 5364177), (49, 5254704), (52, 4951548), (56, 4597866), (63, 4086992), (72, 3576118), (78, 3301032), (84, 3065244), (91, 2829456), (98, 2627352), (104, 2475774), (112, 2298933), (117, 2200688), (126, 2043496), (144, 1788059), (147, 1751568), (156, 1650516), (168, 1532622), (182, 1414728), (196, 1313676), (208, 1237887), (234, 1100344), (252, 1021748), (273, 943152), (294, 875784), (312, 825258), (336, 766311), (343, 750672), (364, 707364), (392, 656838), (401, 642096), (441, 583856), (468, 550172), (504, 510874), (546, 471576), (588, 437892), (624, 412629), (637, 404208), (686, 375336), (728, 353682), (784, 328419), (802, 321048), (819, 314384), (882, 291928), (936, 275086), (1008, 255437), (1029, 250224), (1092, 235788), (1176, 218946), (1203, 214032), (1274, 202104), (1372, 187668), (1456, 176841), (1604, 160524), (1638, 157192), (1764, 145964), (1872, 137543), (1911, 134736), (2058, 125112), (2184, 117894), (2352, 109473), (2406, 107016), (2548, 101052), (2744, 93834), (2807, 91728), (3087, 83408), (3208, 80262), (3276, 78596), (3528, 72982), (3609, 71344), (3822, 67368), (4116, 62556), (4368, 58947), (4459, 57744), (4812, 53508), (5096, 50526), (5213, 49392), (5488, 46917), (5614, 45864), (5733, 44912), (6174, 41704), (6416, 40131), (6552, 39298), (7056, 36491), (7218, 35672), (7644, 33684), (8232, 31278), (8421, 30576), (8918, 28872), (9624, 26754), (10192, 25263), (10426, 24696), (11228, 22932), (11466, 22456), (12348, 20852), (13104, 19649), (13377, 19248), (14436, 17836), (15288, 16842), (15639, 16464)]