20482560

素因数分解:

$2^9\times 3^2\times 5^1\times 7^1\times {\mathrm{127}}^1$

素因数の和:163

約数の個数: 240

約数和(自身を含む): 81709056

約数和(自身を除く): 61226496

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 127, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 254, 256, 280, 288, 315, 320, 336, 360, 381, 384, 420, 448, 480, 504, 508, 512, 560, 576, 630, 635, 640, 672, 720, 762, 768, 840, 889, 896, 960, 1008, 1016, 1120, 1143, 1152, 1260, 1270, 1280, 1344, 1440, 1524, 1536, 1680, 1778, 1792, 1905, 1920, 2016, 2032, 2240, 2286, 2304, 2520, 2540, 2560, 2667, 2688, 2880, 3048, 3360, 3556, 3584, 3810, 3840, 4032, 4064, 4445, 4480, 4572, 4608, 5040, 5080, 5334, 5376, 5715, 5760, 6096, 6720, 7112, 7620, 7680, 8001, 8064, 8128, 8890, 8960, 9144, 10080, 10160, 10668, 10752, 11430, 11520, 12192, 13335, 13440, 14224, 15240, 16002, 16128, 16256, 17780, 17920, 18288, 20160, 20320, 21336, 22860, 23040, 24384, 26670, 26880, 28448, 30480, 32004, 32256, 32512, 35560, 36576, 40005, 40320, 40640, 42672, 45720, 48768, 53340, 53760, 56896, 60960, 64008, 65024, 71120, 73152, 80010, 80640, 81280, 85344, 91440, 97536, 106680, 113792, 121920, 128016, 142240, 146304, 160020, 161280, 162560, 170688, 182880, 195072, 213360, 227584, 243840, 256032, 284480, 292608, 320040, 325120, 341376, 365760, 426720, 455168, 487680, 512064, 568960, 585216, 640080, 682752, 731520, 853440, 975360, 1024128, 1137920, 1280160, 1365504, 1463040, 1706880, 2048256, 2275840, 2560320, 2926080, 3413760, 4096512, 5120640, 6827520, 10241280, 20482560]

約数ペア:

[(1, 20482560), (2, 10241280), (3, 6827520), (4, 5120640), (5, 4096512), (6, 3413760), (7, 2926080), (8, 2560320), (9, 2275840), (10, 2048256), (12, 1706880), (14, 1463040), (15, 1365504), (16, 1280160), (18, 1137920), (20, 1024128), (21, 975360), (24, 853440), (28, 731520), (30, 682752), (32, 640080), (35, 585216), (36, 568960), (40, 512064), (42, 487680), (45, 455168), (48, 426720), (56, 365760), (60, 341376), (63, 325120), (64, 320040), (70, 292608), (72, 284480), (80, 256032), (84, 243840), (90, 227584), (96, 213360), (105, 195072), (112, 182880), (120, 170688), (126, 162560), (127, 161280), (128, 160020), (140, 146304), (144, 142240), (160, 128016), (168, 121920), (180, 113792), (192, 106680), (210, 97536), (224, 91440), (240, 85344), (252, 81280), (254, 80640), (256, 80010), (280, 73152), (288, 71120), (315, 65024), (320, 64008), (336, 60960), (360, 56896), (381, 53760), (384, 53340), (420, 48768), (448, 45720), (480, 42672), (504, 40640), (508, 40320), (512, 40005), (560, 36576), (576, 35560), (630, 32512), (635, 32256), (640, 32004), (672, 30480), (720, 28448), (762, 26880), (768, 26670), (840, 24384), (889, 23040), (896, 22860), (960, 21336), (1008, 20320), (1016, 20160), (1120, 18288), (1143, 17920), (1152, 17780), (1260, 16256), (1270, 16128), (1280, 16002), (1344, 15240), (1440, 14224), (1524, 13440), (1536, 13335), (1680, 12192), (1778, 11520), (1792, 11430), (1905, 10752), (1920, 10668), (2016, 10160), (2032, 10080), (2240, 9144), (2286, 8960), (2304, 8890), (2520, 8128), (2540, 8064), (2560, 8001), (2667, 7680), (2688, 7620), (2880, 7112), (3048, 6720), (3360, 6096), (3556, 5760), (3584, 5715), (3810, 5376), (3840, 5334), (4032, 5080), (4064, 5040), (4445, 4608), (4480, 4572)]