256718440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:152

約数の個数: 192

約数和(自身を含む): 689472000

約数和(自身を除く): 432753560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 31, 40, 44, 55, 58, 59, 62, 88, 110, 116, 118, 121, 124, 145, 155, 220, 232, 236, 242, 248, 290, 295, 310, 319, 341, 440, 472, 484, 580, 590, 605, 620, 638, 649, 682, 899, 968, 1160, 1180, 1210, 1240, 1276, 1298, 1364, 1595, 1705, 1711, 1798, 1829, 2360, 2420, 2552, 2596, 2728, 3190, 3245, 3410, 3422, 3509, 3596, 3658, 3751, 4495, 4840, 5192, 6380, 6490, 6820, 6844, 7018, 7139, 7192, 7316, 7502, 8555, 8990, 9145, 9889, 12760, 12980, 13640, 13688, 14036, 14278, 14632, 15004, 17110, 17545, 17980, 18290, 18755, 18821, 19778, 20119, 25960, 28072, 28556, 30008, 34220, 35090, 35695, 35960, 36580, 37510, 37642, 39556, 40238, 49445, 53041, 57112, 68440, 70180, 71390, 73160, 75020, 75284, 79112, 80476, 94105, 98890, 100595, 106082, 108779, 140360, 142780, 150040, 150568, 160952, 188210, 197780, 201190, 207031, 212164, 217558, 221309, 265205, 285560, 376420, 395560, 402380, 414062, 424328, 435116, 442618, 530410, 543895, 583451, 752840, 804760, 828124, 870232, 885236, 1035155, 1060820, 1087790, 1106545, 1166902, 1656248, 1770472, 2070310, 2121640, 2175580, 2213090, 2333804, 2917255, 4140620, 4351160, 4426180, 4667608, 5834510, 6417961, 8281240, 8852360, 11669020, 12835922, 23338040, 25671844, 32089805, 51343688, 64179610, 128359220, 256718440]

約数ペア:

[(1, 256718440), (2, 128359220), (4, 64179610), (5, 51343688), (8, 32089805), (10, 25671844), (11, 23338040), (20, 12835922), (22, 11669020), (29, 8852360), (31, 8281240), (40, 6417961), (44, 5834510), (55, 4667608), (58, 4426180), (59, 4351160), (62, 4140620), (88, 2917255), (110, 2333804), (116, 2213090), (118, 2175580), (121, 2121640), (124, 2070310), (145, 1770472), (155, 1656248), (220, 1166902), (232, 1106545), (236, 1087790), (242, 1060820), (248, 1035155), (290, 885236), (295, 870232), (310, 828124), (319, 804760), (341, 752840), (440, 583451), (472, 543895), (484, 530410), (580, 442618), (590, 435116), (605, 424328), (620, 414062), (638, 402380), (649, 395560), (682, 376420), (899, 285560), (968, 265205), (1160, 221309), (1180, 217558), (1210, 212164), (1240, 207031), (1276, 201190), (1298, 197780), (1364, 188210), (1595, 160952), (1705, 150568), (1711, 150040), (1798, 142780), (1829, 140360), (2360, 108779), (2420, 106082), (2552, 100595), (2596, 98890), (2728, 94105), (3190, 80476), (3245, 79112), (3410, 75284), (3422, 75020), (3509, 73160), (3596, 71390), (3658, 70180), (3751, 68440), (4495, 57112), (4840, 53041), (5192, 49445), (6380, 40238), (6490, 39556), (6820, 37642), (6844, 37510), (7018, 36580), (7139, 35960), (7192, 35695), (7316, 35090), (7502, 34220), (8555, 30008), (8990, 28556), (9145, 28072), (9889, 25960), (12760, 20119), (12980, 19778), (13640, 18821), (13688, 18755), (14036, 18290), (14278, 17980), (14632, 17545), (15004, 17110)]