21385728

素因数分解:

$2^9\times 3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1$

素因数の和:64

約数の個数: 320

約数和(自身を含む): 82494720

約数和(自身を除く): 61108992

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 16, 17, 18, 21, 24, 26, 27, 28, 32, 34, 36, 39, 42, 48, 51, 52, 54, 56, 63, 64, 68, 72, 78, 84, 91, 96, 102, 104, 108, 112, 117, 119, 126, 128, 136, 144, 153, 156, 168, 182, 189, 192, 204, 208, 216, 221, 224, 234, 238, 252, 256, 272, 273, 288, 306, 312, 336, 351, 357, 364, 378, 384, 408, 416, 432, 442, 448, 459, 468, 476, 504, 512, 544, 546, 576, 612, 624, 663, 672, 702, 714, 728, 756, 768, 816, 819, 832, 864, 884, 896, 918, 936, 952, 1008, 1071, 1088, 1092, 1152, 1224, 1248, 1326, 1344, 1404, 1428, 1456, 1512, 1536, 1547, 1632, 1638, 1664, 1728, 1768, 1792, 1836, 1872, 1904, 1989, 2016, 2142, 2176, 2184, 2304, 2448, 2457, 2496, 2652, 2688, 2808, 2856, 2912, 3024, 3094, 3213, 3264, 3276, 3328, 3456, 3536, 3584, 3672, 3744, 3808, 3978, 4032, 4284, 4352, 4368, 4608, 4641, 4896, 4914, 4992, 5304, 5376, 5616, 5712, 5824, 5967, 6048, 6188, 6426, 6528, 6552, 6656, 6912, 7072, 7344, 7488, 7616, 7956, 8064, 8568, 8704, 8736, 9282, 9792, 9828, 9984, 10608, 10752, 11232, 11424, 11648, 11934, 12096, 12376, 12852, 13056, 13104, 13824, 13923, 14144, 14688, 14976, 15232, 15912, 16128, 17136, 17472, 18564, 19584, 19656, 19968, 21216, 22464, 22848, 23296, 23868, 24192, 24752, 25704, 26112, 26208, 27846, 28288, 29376, 29952, 30464, 31824, 32256, 34272, 34944, 37128, 39168, 39312, 41769, 42432, 44928, 45696, 46592, 47736, 48384, 49504, 51408, 52416, 55692, 56576, 58752, 59904, 60928, 63648, 68544, 69888, 74256, 78336, 78624, 83538, 84864, 89856, 91392, 95472, 96768, 99008, 102816, 104832, 111384, 113152, 117504, 127296, 137088, 139776, 148512, 157248, 167076, 169728, 179712, 182784, 190944, 198016, 205632, 209664, 222768, 235008, 254592, 274176, 297024, 314496, 334152, 339456, 381888, 396032, 411264, 419328, 445536, 509184, 548352, 594048, 628992, 668304, 763776, 792064, 822528, 891072, 1018368, 1188096, 1257984, 1336608, 1527552, 1645056, 1782144, 2376192, 2673216, 3055104, 3564288, 5346432, 7128576, 10692864, 21385728]

約数ペア:

[(1, 21385728), (2, 10692864), (3, 7128576), (4, 5346432), (6, 3564288), (7, 3055104), (8, 2673216), (9, 2376192), (12, 1782144), (13, 1645056), (14, 1527552), (16, 1336608), (17, 1257984), (18, 1188096), (21, 1018368), (24, 891072), (26, 822528), (27, 792064), (28, 763776), (32, 668304), (34, 628992), (36, 594048), (39, 548352), (42, 509184), (48, 445536), (51, 419328), (52, 411264), (54, 396032), (56, 381888), (63, 339456), (64, 334152), (68, 314496), (72, 297024), (78, 274176), (84, 254592), (91, 235008), (96, 222768), (102, 209664), (104, 205632), (108, 198016), (112, 190944), (117, 182784), (119, 179712), (126, 169728), (128, 167076), (136, 157248), (144, 148512), (153, 139776), (156, 137088), (168, 127296), (182, 117504), (189, 113152), (192, 111384), (204, 104832), (208, 102816), (216, 99008), (221, 96768), (224, 95472), (234, 91392), (238, 89856), (252, 84864), (256, 83538), (272, 78624), (273, 78336), (288, 74256), (306, 69888), (312, 68544), (336, 63648), (351, 60928), (357, 59904), (364, 58752), (378, 56576), (384, 55692), (408, 52416), (416, 51408), (432, 49504), (442, 48384), (448, 47736), (459, 46592), (468, 45696), (476, 44928), (504, 42432), (512, 41769), (544, 39312), (546, 39168), (576, 37128), (612, 34944), (624, 34272), (663, 32256), (672, 31824), (702, 30464), (714, 29952), (728, 29376), (756, 28288), (768, 27846), (816, 26208), (819, 26112), (832, 25704), (864, 24752), (884, 24192), (896, 23868), (918, 23296), (936, 22848), (952, 22464), (1008, 21216), (1071, 19968), (1088, 19656), (1092, 19584), (1152, 18564), (1224, 17472), (1248, 17136), (1326, 16128), (1344, 15912), (1404, 15232), (1428, 14976), (1456, 14688), (1512, 14144), (1536, 13923), (1547, 13824), (1632, 13104), (1638, 13056), (1664, 12852), (1728, 12376), (1768, 12096), (1792, 11934), (1836, 11648), (1872, 11424), (1904, 11232), (1989, 10752), (2016, 10608), (2142, 9984), (2176, 9828), (2184, 9792), (2304, 9282), (2448, 8736), (2457, 8704), (2496, 8568), (2652, 8064), (2688, 7956), (2808, 7616), (2856, 7488), (2912, 7344), (3024, 7072), (3094, 6912), (3213, 6656), (3264, 6552), (3276, 6528), (3328, 6426), (3456, 6188), (3536, 6048), (3584, 5967), (3672, 5824), (3744, 5712), (3808, 5616), (3978, 5376), (4032, 5304), (4284, 4992), (4352, 4914), (4368, 4896), (4608, 4641)]