661638208

素因数分解:

$2^6\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:193

約数の個数: 224

約数和(自身を含む): 1741602816

約数和(自身を除く): 1079964608

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 31, 32, 44, 56, 61, 62, 64, 71, 77, 88, 112, 122, 124, 142, 154, 176, 217, 224, 244, 248, 284, 308, 341, 352, 427, 434, 448, 488, 496, 497, 568, 616, 671, 682, 704, 781, 854, 868, 976, 992, 994, 1136, 1232, 1342, 1364, 1562, 1708, 1736, 1891, 1952, 1984, 1988, 2201, 2272, 2387, 2464, 2684, 2728, 3124, 3416, 3472, 3782, 3904, 3976, 4331, 4402, 4544, 4697, 4774, 4928, 5368, 5456, 5467, 6248, 6832, 6944, 7564, 7952, 8662, 8804, 9394, 9548, 10736, 10912, 10934, 12496, 13237, 13664, 13888, 15128, 15407, 15904, 17324, 17608, 18788, 19096, 20801, 21472, 21824, 21868, 24211, 24992, 26474, 27328, 30256, 30317, 30814, 31808, 34648, 35216, 37576, 38192, 41602, 42944, 43736, 47641, 48422, 49984, 52948, 60512, 60634, 61628, 69296, 70432, 75152, 76384, 83204, 87472, 95282, 96844, 105896, 121024, 121268, 123256, 134261, 138592, 140864, 145607, 150304, 152768, 166408, 169477, 174944, 190564, 193688, 211792, 242536, 246512, 268522, 277184, 291214, 300608, 332816, 333487, 338954, 349888, 381128, 387376, 423584, 485072, 493024, 537044, 582428, 665632, 666974, 677908, 762256, 774752, 847168, 939827, 970144, 986048, 1074088, 1164856, 1331264, 1333948, 1355816, 1476871, 1524512, 1549504, 1879654, 1940288, 2148176, 2329712, 2667896, 2711632, 2953742, 3049024, 3759308, 4296352, 4659424, 5335792, 5423264, 5907484, 7518616, 8592704, 9318848, 10338097, 10671584, 10846528, 11814968, 15037232, 20676194, 21343168, 23629936, 30074464, 41352388, 47259872, 60148928, 82704776, 94519744, 165409552, 330819104, 661638208]

約数ペア:

[(1, 661638208), (2, 330819104), (4, 165409552), (7, 94519744), (8, 82704776), (11, 60148928), (14, 47259872), (16, 41352388), (22, 30074464), (28, 23629936), (31, 21343168), (32, 20676194), (44, 15037232), (56, 11814968), (61, 10846528), (62, 10671584), (64, 10338097), (71, 9318848), (77, 8592704), (88, 7518616), (112, 5907484), (122, 5423264), (124, 5335792), (142, 4659424), (154, 4296352), (176, 3759308), (217, 3049024), (224, 2953742), (244, 2711632), (248, 2667896), (284, 2329712), (308, 2148176), (341, 1940288), (352, 1879654), (427, 1549504), (434, 1524512), (448, 1476871), (488, 1355816), (496, 1333948), (497, 1331264), (568, 1164856), (616, 1074088), (671, 986048), (682, 970144), (704, 939827), (781, 847168), (854, 774752), (868, 762256), (976, 677908), (992, 666974), (994, 665632), (1136, 582428), (1232, 537044), (1342, 493024), (1364, 485072), (1562, 423584), (1708, 387376), (1736, 381128), (1891, 349888), (1952, 338954), (1984, 333487), (1988, 332816), (2201, 300608), (2272, 291214), (2387, 277184), (2464, 268522), (2684, 246512), (2728, 242536), (3124, 211792), (3416, 193688), (3472, 190564), (3782, 174944), (3904, 169477), (3976, 166408), (4331, 152768), (4402, 150304), (4544, 145607), (4697, 140864), (4774, 138592), (4928, 134261), (5368, 123256), (5456, 121268), (5467, 121024), (6248, 105896), (6832, 96844), (6944, 95282), (7564, 87472), (7952, 83204), (8662, 76384), (8804, 75152), (9394, 70432), (9548, 69296), (10736, 61628), (10912, 60634), (10934, 60512), (12496, 52948), (13237, 49984), (13664, 48422), (13888, 47641), (15128, 43736), (15407, 42944), (15904, 41602), (17324, 38192), (17608, 37576), (18788, 35216), (19096, 34648), (20801, 31808), (21472, 30814), (21824, 30317), (21868, 30256), (24211, 27328), (24992, 26474)]