661221120

素因数分解:

$2^8\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1447}}^1$

素因数の和:1495

約数の個数: 288

約数和(自身を含む): 2557191168

約数和(自身を除く): 1895970048

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 17, 20, 21, 24, 28, 30, 32, 34, 35, 40, 42, 48, 51, 56, 60, 64, 68, 70, 80, 84, 85, 96, 102, 105, 112, 119, 120, 128, 136, 140, 160, 168, 170, 192, 204, 210, 224, 238, 240, 255, 256, 272, 280, 320, 336, 340, 357, 384, 408, 420, 448, 476, 480, 510, 544, 560, 595, 640, 672, 680, 714, 768, 816, 840, 896, 952, 960, 1020, 1088, 1120, 1190, 1280, 1344, 1360, 1428, 1447, 1632, 1680, 1785, 1792, 1904, 1920, 2040, 2176, 2240, 2380, 2688, 2720, 2856, 2894, 3264, 3360, 3570, 3808, 3840, 4080, 4341, 4352, 4480, 4760, 5376, 5440, 5712, 5788, 6528, 6720, 7140, 7235, 7616, 8160, 8682, 8960, 9520, 10129, 10880, 11424, 11576, 13056, 13440, 14280, 14470, 15232, 16320, 17364, 19040, 20258, 21705, 21760, 22848, 23152, 24599, 26880, 28560, 28940, 30387, 30464, 32640, 34728, 38080, 40516, 43410, 45696, 46304, 49198, 50645, 57120, 57880, 60774, 65280, 69456, 73797, 76160, 81032, 86820, 91392, 92608, 98396, 101290, 114240, 115760, 121548, 122995, 138912, 147594, 151935, 152320, 162064, 172193, 173640, 185216, 196792, 202580, 228480, 231520, 243096, 245990, 277824, 295188, 303870, 324128, 344386, 347280, 368985, 370432, 393584, 405160, 456960, 463040, 486192, 491980, 516579, 555648, 590376, 607740, 648256, 688772, 694560, 737970, 787168, 810320, 860965, 926080, 972384, 983960, 1033158, 1111296, 1180752, 1215480, 1296512, 1377544, 1389120, 1475940, 1574336, 1620640, 1721930, 1852160, 1944768, 1967920, 2066316, 2361504, 2430960, 2582895, 2593024, 2755088, 2778240, 2951880, 3148672, 3241280, 3443860, 3889536, 3935840, 4132632, 4723008, 4861920, 5165790, 5510176, 5556480, 5903760, 6297344, 6482560, 6887720, 7779072, 7871680, 8265264, 9446016, 9723840, 10331580, 11020352, 11807520, 12965120, 13775440, 15743360, 16530528, 18892032, 19447680, 20663160, 22040704, 23615040, 27550880, 31486720, 33061056, 38895360, 41326320, 44081408, 47230080, 55101760, 66122112, 82652640, 94460160, 110203520, 132244224, 165305280, 220407040, 330610560, 661221120]

約数ペア:

[(1, 661221120), (2, 330610560), (3, 220407040), (4, 165305280), (5, 132244224), (6, 110203520), (7, 94460160), (8, 82652640), (10, 66122112), (12, 55101760), (14, 47230080), (15, 44081408), (16, 41326320), (17, 38895360), (20, 33061056), (21, 31486720), (24, 27550880), (28, 23615040), (30, 22040704), (32, 20663160), (34, 19447680), (35, 18892032), (40, 16530528), (42, 15743360), (48, 13775440), (51, 12965120), (56, 11807520), (60, 11020352), (64, 10331580), (68, 9723840), (70, 9446016), (80, 8265264), (84, 7871680), (85, 7779072), (96, 6887720), (102, 6482560), (105, 6297344), (112, 5903760), (119, 5556480), (120, 5510176), (128, 5165790), (136, 4861920), (140, 4723008), (160, 4132632), (168, 3935840), (170, 3889536), (192, 3443860), (204, 3241280), (210, 3148672), (224, 2951880), (238, 2778240), (240, 2755088), (255, 2593024), (256, 2582895), (272, 2430960), (280, 2361504), (320, 2066316), (336, 1967920), (340, 1944768), (357, 1852160), (384, 1721930), (408, 1620640), (420, 1574336), (448, 1475940), (476, 1389120), (480, 1377544), (510, 1296512), (544, 1215480), (560, 1180752), (595, 1111296), (640, 1033158), (672, 983960), (680, 972384), (714, 926080), (768, 860965), (816, 810320), (840, 787168), (896, 737970), (952, 694560), (960, 688772), (1020, 648256), (1088, 607740), (1120, 590376), (1190, 555648), (1280, 516579), (1344, 491980), (1360, 486192), (1428, 463040), (1447, 456960), (1632, 405160), (1680, 393584), (1785, 370432), (1792, 368985), (1904, 347280), (1920, 344386), (2040, 324128), (2176, 303870), (2240, 295188), (2380, 277824), (2688, 245990), (2720, 243096), (2856, 231520), (2894, 228480), (3264, 202580), (3360, 196792), (3570, 185216), (3808, 173640), (3840, 172193), (4080, 162064), (4341, 152320), (4352, 151935), (4480, 147594), (4760, 138912), (5376, 122995), (5440, 121548), (5712, 115760), (5788, 114240), (6528, 101290), (6720, 98396), (7140, 92608), (7235, 91392), (7616, 86820), (8160, 81032), (8682, 76160), (8960, 73797), (9520, 69456), (10129, 65280), (10880, 60774), (11424, 57880), (11576, 57120), (13056, 50645), (13440, 49198), (14280, 46304), (14470, 45696), (15232, 43410), (16320, 40516), (17364, 38080), (19040, 34728), (20258, 32640), (21705, 30464), (21760, 30387), (22848, 28940), (23152, 28560), (24599, 26880)]