257421281920

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{27431}}^1$

素因数の和:27535

約数の個数: 256

約数和(自身を含む): 709141340160

約数和(自身を除く): 451720058240

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 43, 44, 55, 62, 64, 80, 86, 88, 110, 124, 128, 155, 160, 172, 176, 215, 220, 248, 310, 320, 341, 344, 352, 430, 440, 473, 496, 620, 640, 682, 688, 704, 860, 880, 946, 992, 1240, 1333, 1364, 1376, 1408, 1705, 1720, 1760, 1892, 1984, 2365, 2480, 2666, 2728, 2752, 3410, 3440, 3520, 3784, 3968, 4730, 4960, 5332, 5456, 5504, 6665, 6820, 6880, 7040, 7568, 9460, 9920, 10664, 10912, 13330, 13640, 13760, 14663, 15136, 18920, 19840, 21328, 21824, 26660, 27280, 27431, 27520, 29326, 30272, 37840, 42656, 43648, 53320, 54560, 54862, 58652, 60544, 73315, 75680, 85312, 106640, 109120, 109724, 117304, 137155, 146630, 151360, 170624, 213280, 218240, 219448, 234608, 274310, 293260, 301741, 302720, 426560, 438896, 469216, 548620, 586520, 603482, 850361, 853120, 877792, 938432, 1097240, 1173040, 1179533, 1206964, 1508705, 1700722, 1755584, 1876864, 2194480, 2346080, 2359066, 2413928, 3017410, 3401444, 3511168, 4251805, 4388960, 4692160, 4718132, 4827856, 5897665, 6034820, 6802888, 8503610, 8777920, 9353971, 9384320, 9436264, 9655712, 11795330, 12069640, 12974863, 13605776, 17007220, 17555840, 18707942, 18872528, 19311424, 23590660, 24139280, 25949726, 27211552, 34014440, 36565523, 37415884, 37745056, 38622848, 46769855, 47181320, 48278560, 51899452, 54423104, 64874315, 68028880, 73131046, 74831768, 75490112, 93539710, 94362640, 96557120, 103798904, 108846208, 129748630, 136057760, 146262092, 149663536, 150980224, 182827615, 187079420, 188725280, 193114240, 207597808, 259497260, 272115520, 292524184, 299327072, 365655230, 374158840, 377450560, 402220753, 415195616, 518994520, 544231040, 585048368, 598654144, 731310460, 748317680, 754901120, 804441506, 830391232, 1037989040, 1170096736, 1197308288, 1462620920, 1496635360, 1608883012, 1660782464, 2011103765, 2075978080, 2340193472, 2925241840, 2993270720, 3217766024, 4022207530, 4151956160, 4680386944, 5850483680, 5986541440, 6435532048, 8044415060, 8303912320, 11700967360, 12871064096, 16088830120, 23401934720, 25742128192, 32177660240, 51484256384, 64355320480, 128710640960, 257421281920]

約数ペア:

[(1, 257421281920), (2, 128710640960), (4, 64355320480), (5, 51484256384), (8, 32177660240), (10, 25742128192), (11, 23401934720), (16, 16088830120), (20, 12871064096), (22, 11700967360), (31, 8303912320), (32, 8044415060), (40, 6435532048), (43, 5986541440), (44, 5850483680), (55, 4680386944), (62, 4151956160), (64, 4022207530), (80, 3217766024), (86, 2993270720), (88, 2925241840), (110, 2340193472), (124, 2075978080), (128, 2011103765), (155, 1660782464), (160, 1608883012), (172, 1496635360), (176, 1462620920), (215, 1197308288), (220, 1170096736), (248, 1037989040), (310, 830391232), (320, 804441506), (341, 754901120), (344, 748317680), (352, 731310460), (430, 598654144), (440, 585048368), (473, 544231040), (496, 518994520), (620, 415195616), (640, 402220753), (682, 377450560), (688, 374158840), (704, 365655230), (860, 299327072), (880, 292524184), (946, 272115520), (992, 259497260), (1240, 207597808), (1333, 193114240), (1364, 188725280), (1376, 187079420), (1408, 182827615), (1705, 150980224), (1720, 149663536), (1760, 146262092), (1892, 136057760), (1984, 129748630), (2365, 108846208), (2480, 103798904), (2666, 96557120), (2728, 94362640), (2752, 93539710), (3410, 75490112), (3440, 74831768), (3520, 73131046), (3784, 68028880), (3968, 64874315), (4730, 54423104), (4960, 51899452), (5332, 48278560), (5456, 47181320), (5504, 46769855), (6665, 38622848), (6820, 37745056), (6880, 37415884), (7040, 36565523), (7568, 34014440), (9460, 27211552), (9920, 25949726), (10664, 24139280), (10912, 23590660), (13330, 19311424), (13640, 18872528), (13760, 18707942), (14663, 17555840), (15136, 17007220), (18920, 13605776), (19840, 12974863), (21328, 12069640), (21824, 11795330), (26660, 9655712), (27280, 9436264), (27431, 9384320), (27520, 9353971), (29326, 8777920), (30272, 8503610), (37840, 6802888), (42656, 6034820), (43648, 5897665), (53320, 4827856), (54560, 4718132), (54862, 4692160), (58652, 4388960), (60544, 4251805), (73315, 3511168), (75680, 3401444), (85312, 3017410), (106640, 2413928), (109120, 2359066), (109724, 2346080), (117304, 2194480), (137155, 1876864), (146630, 1755584), (151360, 1700722), (170624, 1508705), (213280, 1206964), (218240, 1179533), (219448, 1173040), (234608, 1097240), (274310, 938432), (293260, 877792), (301741, 853120), (302720, 850361), (426560, 603482), (438896, 586520), (469216, 548620)]