640104444

素因数分解:

$2^2\times 3^4\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1753}}^1$

素因数の和:1806

約数の個数: 180

約数和(自身を含む): 2032352784

約数和(自身を除く): 1392248340

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 23, 27, 28, 36, 42, 46, 49, 54, 63, 69, 81, 84, 92, 98, 108, 126, 138, 147, 161, 162, 189, 196, 207, 252, 276, 294, 322, 324, 378, 414, 441, 483, 567, 588, 621, 644, 756, 828, 882, 966, 1127, 1134, 1242, 1323, 1449, 1753, 1764, 1863, 1932, 2254, 2268, 2484, 2646, 2898, 3381, 3506, 3726, 3969, 4347, 4508, 5259, 5292, 5796, 6762, 7012, 7452, 7938, 8694, 10143, 10518, 12271, 13041, 13524, 15777, 15876, 17388, 20286, 21036, 24542, 26082, 30429, 31554, 36813, 40319, 40572, 47331, 49084, 52164, 60858, 63108, 73626, 80638, 85897, 91287, 94662, 110439, 120957, 121716, 141993, 147252, 161276, 171794, 182574, 189324, 220878, 241914, 257691, 282233, 283986, 331317, 343588, 362871, 365148, 441756, 483828, 515382, 564466, 567972, 662634, 725742, 773073, 846699, 993951, 1030764, 1088613, 1128932, 1325268, 1451484, 1546146, 1693398, 1975631, 1987902, 2177226, 2319219, 2540097, 3092292, 3265839, 3386796, 3951262, 3975804, 4354452, 4638438, 5080194, 5926893, 6531678, 6957657, 7620291, 7902524, 9276876, 10160388, 11853786, 13063356, 13915314, 15240582, 17780679, 22860873, 23707572, 27830628, 30481164, 35561358, 45721746, 53342037, 71122716, 91443492, 106684074, 160026111, 213368148, 320052222, 640104444]

約数ペア:

[(1, 640104444), (2, 320052222), (3, 213368148), (4, 160026111), (6, 106684074), (7, 91443492), (9, 71122716), (12, 53342037), (14, 45721746), (18, 35561358), (21, 30481164), (23, 27830628), (27, 23707572), (28, 22860873), (36, 17780679), (42, 15240582), (46, 13915314), (49, 13063356), (54, 11853786), (63, 10160388), (69, 9276876), (81, 7902524), (84, 7620291), (92, 6957657), (98, 6531678), (108, 5926893), (126, 5080194), (138, 4638438), (147, 4354452), (161, 3975804), (162, 3951262), (189, 3386796), (196, 3265839), (207, 3092292), (252, 2540097), (276, 2319219), (294, 2177226), (322, 1987902), (324, 1975631), (378, 1693398), (414, 1546146), (441, 1451484), (483, 1325268), (567, 1128932), (588, 1088613), (621, 1030764), (644, 993951), (756, 846699), (828, 773073), (882, 725742), (966, 662634), (1127, 567972), (1134, 564466), (1242, 515382), (1323, 483828), (1449, 441756), (1753, 365148), (1764, 362871), (1863, 343588), (1932, 331317), (2254, 283986), (2268, 282233), (2484, 257691), (2646, 241914), (2898, 220878), (3381, 189324), (3506, 182574), (3726, 171794), (3969, 161276), (4347, 147252), (4508, 141993), (5259, 121716), (5292, 120957), (5796, 110439), (6762, 94662), (7012, 91287), (7452, 85897), (7938, 80638), (8694, 73626), (10143, 63108), (10518, 60858), (12271, 52164), (13041, 49084), (13524, 47331), (15777, 40572), (15876, 40319), (17388, 36813), (20286, 31554), (21036, 30429), (24542, 26082)]