20689710720

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{66931}}^1$

素因数の和:66983

約数の個数: 256

約数和(自身を含む): 78647777280

約数和(自身を除く): 57958066560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 23, 24, 28, 30, 32, 35, 40, 42, 46, 48, 56, 60, 64, 69, 70, 80, 84, 92, 96, 105, 112, 115, 120, 128, 138, 140, 160, 161, 168, 184, 192, 210, 224, 230, 240, 276, 280, 320, 322, 336, 345, 368, 384, 420, 448, 460, 480, 483, 552, 560, 640, 644, 672, 690, 736, 805, 840, 896, 920, 960, 966, 1104, 1120, 1288, 1344, 1380, 1472, 1610, 1680, 1840, 1920, 1932, 2208, 2240, 2415, 2576, 2688, 2760, 2944, 3220, 3360, 3680, 3864, 4416, 4480, 4830, 5152, 5520, 6440, 6720, 7360, 7728, 8832, 9660, 10304, 11040, 12880, 13440, 14720, 15456, 19320, 20608, 22080, 25760, 30912, 38640, 44160, 51520, 61824, 66931, 77280, 103040, 133862, 154560, 200793, 267724, 309120, 334655, 401586, 468517, 535448, 669310, 803172, 937034, 1003965, 1070896, 1338620, 1405551, 1539413, 1606344, 1874068, 2007930, 2141792, 2342585, 2677240, 2811102, 3078826, 3212688, 3748136, 4015860, 4283584, 4618239, 4685170, 5354480, 5622204, 6157652, 6425376, 7027755, 7496272, 7697065, 8031720, 8567168, 9236478, 9370340, 10708960, 10775891, 11244408, 12315304, 12850752, 14055510, 14992544, 15394130, 16063440, 18472956, 18740680, 21417920, 21551782, 22488816, 23091195, 24630608, 25701504, 28111020, 29985088, 30788260, 32126880, 32327673, 36945912, 37481360, 42835840, 43103564, 44977632, 46182390, 49261216, 53879455, 56222040, 59970176, 61576520, 64253760, 64655346, 73891824, 74962720, 86207128, 89955264, 92364780, 98522432, 107758910, 112444080, 123153040, 128507520, 129310692, 147783648, 149925440, 161638365, 172414256, 179910528, 184729560, 197044864, 215517820, 224888160, 246306080, 258621384, 295567296, 299850880, 323276730, 344828512, 369459120, 431035640, 449776320, 492612160, 517242768, 591134592, 646553460, 689657024, 738918240, 862071280, 899552640, 985224320, 1034485536, 1293106920, 1379314048, 1477836480, 1724142560, 2068971072, 2586213840, 2955672960, 3448285120, 4137942144, 5172427680, 6896570240, 10344855360, 20689710720]

約数ペア:

[(1, 20689710720), (2, 10344855360), (3, 6896570240), (4, 5172427680), (5, 4137942144), (6, 3448285120), (7, 2955672960), (8, 2586213840), (10, 2068971072), (12, 1724142560), (14, 1477836480), (15, 1379314048), (16, 1293106920), (20, 1034485536), (21, 985224320), (23, 899552640), (24, 862071280), (28, 738918240), (30, 689657024), (32, 646553460), (35, 591134592), (40, 517242768), (42, 492612160), (46, 449776320), (48, 431035640), (56, 369459120), (60, 344828512), (64, 323276730), (69, 299850880), (70, 295567296), (80, 258621384), (84, 246306080), (92, 224888160), (96, 215517820), (105, 197044864), (112, 184729560), (115, 179910528), (120, 172414256), (128, 161638365), (138, 149925440), (140, 147783648), (160, 129310692), (161, 128507520), (168, 123153040), (184, 112444080), (192, 107758910), (210, 98522432), (224, 92364780), (230, 89955264), (240, 86207128), (276, 74962720), (280, 73891824), (320, 64655346), (322, 64253760), (336, 61576520), (345, 59970176), (368, 56222040), (384, 53879455), (420, 49261216), (448, 46182390), (460, 44977632), (480, 43103564), (483, 42835840), (552, 37481360), (560, 36945912), (640, 32327673), (644, 32126880), (672, 30788260), (690, 29985088), (736, 28111020), (805, 25701504), (840, 24630608), (896, 23091195), (920, 22488816), (960, 21551782), (966, 21417920), (1104, 18740680), (1120, 18472956), (1288, 16063440), (1344, 15394130), (1380, 14992544), (1472, 14055510), (1610, 12850752), (1680, 12315304), (1840, 11244408), (1920, 10775891), (1932, 10708960), (2208, 9370340), (2240, 9236478), (2415, 8567168), (2576, 8031720), (2688, 7697065), (2760, 7496272), (2944, 7027755), (3220, 6425376), (3360, 6157652), (3680, 5622204), (3864, 5354480), (4416, 4685170), (4480, 4618239), (4830, 4283584), (5152, 4015860), (5520, 3748136), (6440, 3212688), (6720, 3078826), (7360, 2811102), (7728, 2677240), (8832, 2342585), (9660, 2141792), (10304, 2007930), (11040, 1874068), (12880, 1606344), (13440, 1539413), (14720, 1405551), (15456, 1338620), (19320, 1070896), (20608, 1003965), (22080, 937034), (25760, 803172), (30912, 669310), (38640, 535448), (44160, 468517), (51520, 401586), (61824, 334655), (66931, 309120), (77280, 267724), (103040, 200793), (133862, 154560)]