1978621568

素因数分解:

$2^7\times 7^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{241}}^1$

素因数の和:304

約数の個数: 256

約数和(自身を含む): 5331744000

約数和(自身を除く): 3353122432

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 17, 22, 28, 32, 34, 44, 49, 56, 64, 68, 77, 88, 98, 112, 119, 128, 136, 154, 176, 187, 196, 224, 238, 241, 272, 308, 343, 352, 374, 392, 448, 476, 482, 539, 544, 616, 686, 704, 748, 784, 833, 896, 952, 964, 1078, 1088, 1232, 1309, 1372, 1408, 1496, 1568, 1666, 1687, 1904, 1928, 2156, 2176, 2464, 2618, 2651, 2744, 2992, 3136, 3332, 3374, 3773, 3808, 3856, 4097, 4312, 4928, 5236, 5302, 5488, 5831, 5984, 6272, 6664, 6748, 7546, 7616, 7712, 8194, 8624, 9163, 9856, 10472, 10604, 10976, 11662, 11809, 11968, 13328, 13496, 15092, 15232, 15424, 16388, 17248, 18326, 18557, 20944, 21208, 21952, 23324, 23618, 23936, 26656, 26992, 28679, 30184, 30848, 32776, 34496, 36652, 37114, 41888, 42416, 43904, 45067, 46648, 47236, 53312, 53984, 57358, 60368, 64141, 65552, 68992, 73304, 74228, 82663, 83776, 84832, 90134, 93296, 94472, 106624, 107968, 114716, 120736, 128282, 129899, 131104, 146608, 148456, 165326, 167552, 169664, 180268, 186592, 188944, 200753, 215936, 229432, 241472, 256564, 259798, 262208, 293216, 296912, 315469, 330652, 339328, 360536, 373184, 377888, 401506, 458864, 482944, 513128, 519596, 524416, 586432, 593824, 630938, 661304, 721072, 746368, 755776, 803012, 909293, 917728, 1026256, 1039192, 1172864, 1187648, 1261876, 1322608, 1405271, 1442144, 1511552, 1606024, 1818586, 1835456, 2052512, 2078384, 2208283, 2375296, 2523752, 2645216, 2810542, 2884288, 3212048, 3637172, 3670912, 4105024, 4156768, 4416566, 5047504, 5290432, 5621084, 5768576, 6424096, 7274344, 8210048, 8313536, 8833132, 10095008, 10580864, 11242168, 12848192, 14548688, 15457981, 16627072, 17666264, 20190016, 22484336, 25696384, 29097376, 30915962, 35332528, 40380032, 44968672, 58194752, 61831924, 70665056, 89937344, 116389504, 123663848, 141330112, 179874688, 247327696, 282660224, 494655392, 989310784, 1978621568]

約数ペア:

[(1, 1978621568), (2, 989310784), (4, 494655392), (7, 282660224), (8, 247327696), (11, 179874688), (14, 141330112), (16, 123663848), (17, 116389504), (22, 89937344), (28, 70665056), (32, 61831924), (34, 58194752), (44, 44968672), (49, 40380032), (56, 35332528), (64, 30915962), (68, 29097376), (77, 25696384), (88, 22484336), (98, 20190016), (112, 17666264), (119, 16627072), (128, 15457981), (136, 14548688), (154, 12848192), (176, 11242168), (187, 10580864), (196, 10095008), (224, 8833132), (238, 8313536), (241, 8210048), (272, 7274344), (308, 6424096), (343, 5768576), (352, 5621084), (374, 5290432), (392, 5047504), (448, 4416566), (476, 4156768), (482, 4105024), (539, 3670912), (544, 3637172), (616, 3212048), (686, 2884288), (704, 2810542), (748, 2645216), (784, 2523752), (833, 2375296), (896, 2208283), (952, 2078384), (964, 2052512), (1078, 1835456), (1088, 1818586), (1232, 1606024), (1309, 1511552), (1372, 1442144), (1408, 1405271), (1496, 1322608), (1568, 1261876), (1666, 1187648), (1687, 1172864), (1904, 1039192), (1928, 1026256), (2156, 917728), (2176, 909293), (2464, 803012), (2618, 755776), (2651, 746368), (2744, 721072), (2992, 661304), (3136, 630938), (3332, 593824), (3374, 586432), (3773, 524416), (3808, 519596), (3856, 513128), (4097, 482944), (4312, 458864), (4928, 401506), (5236, 377888), (5302, 373184), (5488, 360536), (5831, 339328), (5984, 330652), (6272, 315469), (6664, 296912), (6748, 293216), (7546, 262208), (7616, 259798), (7712, 256564), (8194, 241472), (8624, 229432), (9163, 215936), (9856, 200753), (10472, 188944), (10604, 186592), (10976, 180268), (11662, 169664), (11809, 167552), (11968, 165326), (13328, 148456), (13496, 146608), (15092, 131104), (15232, 129899), (15424, 128282), (16388, 120736), (17248, 114716), (18326, 107968), (18557, 106624), (20944, 94472), (21208, 93296), (21952, 90134), (23324, 84832), (23618, 83776), (23936, 82663), (26656, 74228), (26992, 73304), (28679, 68992), (30184, 65552), (30848, 64141), (32776, 60368), (34496, 57358), (36652, 53984), (37114, 53312), (41888, 47236), (42416, 46648), (43904, 45067)]