21965062.000000000

素因数分解:

$2^8\times 3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1$

素因数の和:454

約数の個数: 288

約数和(自身を含む): 938604800

約数和(自身を除く): 681347072

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 16, 18, 21, 24, 26, 27, 28, 32, 36, 39, 42, 48, 52, 54, 56, 63, 64, 72, 78, 84, 91, 96, 104, 108, 112, 117, 126, 128, 144, 156, 168, 182, 189, 192, 208, 216, 224, 234, 252, 256, 273, 288, 312, 336, 351, 364, 378, 384, 409, 416, 432, 448, 468, 504, 546, 576, 624, 672, 702, 728, 756, 768, 818, 819, 832, 864, 896, 936, 1008, 1092, 1152, 1227, 1248, 1344, 1404, 1456, 1512, 1636, 1638, 1664, 1728, 1792, 1872, 2016, 2184, 2304, 2454, 2457, 2496, 2688, 2808, 2863, 2912, 3024, 3272, 3276, 3328, 3456, 3681, 3744, 4032, 4368, 4908, 4914, 4992, 5317, 5376, 5616, 5726, 5824, 6048, 6544, 6552, 6912, 7362, 7488, 8064, 8589, 8736, 9816, 9828, 9984, 10634, 11043, 11232, 11452, 11648, 12096, 13088, 13104, 14724, 14976, 15951, 16128, 17178, 17472, 19632, 19656, 21268, 22086, 22464, 22904, 23296, 24192, 25767, 26176, 26208, 29448, 29952, 31902, 34356, 34944, 37219, 39264, 39312, 42536, 44172, 44928, 45808, 47853, 48384, 51534, 52352, 52416, 58896, 63804, 68712, 69888, 74438, 77301, 78528, 78624, 85072, 88344, 89856, 91616, 95706, 103068, 104704, 104832, 111657, 117792, 127608, 137424, 143559, 148876, 154602, 157056, 157248, 170144, 176688, 183232, 191412, 206136, 209664, 223314, 235584, 255216, 274848, 287118, 297752, 309204, 314112, 314496, 334971, 340288, 353376, 366464, 382824, 412272, 446628, 471168, 510432, 549696, 574236, 595504, 618408, 628992, 669942, 680576, 706752, 732928, 765648, 824544, 893256, 942336, 1004913, 1020864, 1099392, 1148472, 1191008, 1236816, 1339884, 1361152, 1413504, 1531296, 1649088, 1786512, 2009826, 2041728, 2198784, 2296944, 2382016, 2473632, 2679768, 2827008, 3062592, 3298176, 3573024, 4019652, 4083456, 4593888, 4764032, 4947264, 5359536, 6125184, 6596352, 7146048, 8039304, 9187776, 9528064, 9894528, 10719072, 12250368, 14292096, 16078608, 18375552, 19789056, 21438144, 28584192, 32157216, 36751104, 42876288, 64314432, 85752576, 128628864, 257257728]

約数ペア:

[(1, 257257728), (2, 128628864), (3, 85752576), (4, 64314432), (6, 42876288), (7, 36751104), (8, 32157216), (9, 28584192), (12, 21438144), (13, 19789056), (14, 18375552), (16, 16078608), (18, 14292096), (21, 12250368), (24, 10719072), (26, 9894528), (27, 9528064), (28, 9187776), (32, 8039304), (36, 7146048), (39, 6596352), (42, 6125184), (48, 5359536), (52, 4947264), (54, 4764032), (56, 4593888), (63, 4083456), (64, 4019652), (72, 3573024), (78, 3298176), (84, 3062592), (91, 2827008), (96, 2679768), (104, 2473632), (108, 2382016), (112, 2296944), (117, 2198784), (126, 2041728), (128, 2009826), (144, 1786512), (156, 1649088), (168, 1531296), (182, 1413504), (189, 1361152), (192, 1339884), (208, 1236816), (216, 1191008), (224, 1148472), (234, 1099392), (252, 1020864), (256, 1004913), (273, 942336), (288, 893256), (312, 824544), (336, 765648), (351, 732928), (364, 706752), (378, 680576), (384, 669942), (409, 628992), (416, 618408), (432, 595504), (448, 574236), (468, 549696), (504, 510432), (546, 471168), (576, 446628), (624, 412272), (672, 382824), (702, 366464), (728, 353376), (756, 340288), (768, 334971), (818, 314496), (819, 314112), (832, 309204), (864, 297752), (896, 287118), (936, 274848), (1008, 255216), (1092, 235584), (1152, 223314), (1227, 209664), (1248, 206136), (1344, 191412), (1404, 183232), (1456, 176688), (1512, 170144), (1636, 157248), (1638, 157056), (1664, 154602), (1728, 148876), (1792, 143559), (1872, 137424), (2016, 127608), (2184, 117792), (2304, 111657), (2454, 104832), (2457, 104704), (2496, 103068), (2688, 95706), (2808, 91616), (2863, 89856), (2912, 88344), (3024, 85072), (3272, 78624), (3276, 78528), (3328, 77301), (3456, 74438), (3681, 69888), (3744, 68712), (4032, 63804), (4368, 58896), (4908, 52416), (4914, 52352), (4992, 51534), (5317, 48384), (5376, 47853), (5616, 45808), (5726, 44928), (5824, 44172), (6048, 42536), (6544, 39312), (6552, 39264), (6912, 37219), (7362, 34944), (7488, 34356), (8064, 31902), (8589, 29952), (8736, 29448), (9816, 26208), (9828, 26176), (9984, 25767), (10634, 24192), (11043, 23296), (11232, 22904), (11452, 22464), (11648, 22086), (12096, 21268), (13088, 19656), (13104, 19632), (14724, 17472), (14976, 17178), (15951, 16128)]