20561840640

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{81131}}^1$

素因数の和:81171

約数の個数: 240

約数和(自身を含む): 77686161696

約数和(自身を除く): 57124321056

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 64, 66, 72, 80, 88, 90, 96, 99, 110, 120, 128, 132, 144, 160, 165, 176, 180, 192, 198, 220, 240, 256, 264, 288, 320, 330, 352, 360, 384, 396, 440, 480, 495, 512, 528, 576, 640, 660, 704, 720, 768, 792, 880, 960, 990, 1056, 1152, 1280, 1320, 1408, 1440, 1536, 1584, 1760, 1920, 1980, 2112, 2304, 2560, 2640, 2816, 2880, 3168, 3520, 3840, 3960, 4224, 4608, 5280, 5632, 5760, 6336, 7040, 7680, 7920, 8448, 10560, 11520, 12672, 14080, 15840, 16896, 21120, 23040, 25344, 28160, 31680, 42240, 50688, 63360, 81131, 84480, 126720, 162262, 243393, 253440, 324524, 405655, 486786, 649048, 730179, 811310, 892441, 973572, 1216965, 1298096, 1460358, 1622620, 1784882, 1947144, 2433930, 2596192, 2677323, 2920716, 3245240, 3569764, 3650895, 3894288, 4462205, 4867860, 5192384, 5354646, 5841432, 6490480, 7139528, 7301790, 7788576, 8031969, 8924410, 9735720, 10384768, 10709292, 11682864, 12980960, 13386615, 14279056, 14603580, 15577152, 16063938, 17848820, 19471440, 20769536, 21418584, 23365728, 25961920, 26773230, 28558112, 29207160, 31154304, 32127876, 35697640, 38942880, 40159845, 41539072, 42837168, 46731456, 51923840, 53546460, 57116224, 58414320, 62308608, 64255752, 71395280, 77885760, 80319690, 85674336, 93462912, 103847680, 107092920, 114232448, 116828640, 124617216, 128511504, 142790560, 155771520, 160639380, 171348672, 186925824, 207695360, 214185840, 228464896, 233657280, 257023008, 285581120, 311543040, 321278760, 342697344, 373851648, 428371680, 456929792, 467314560, 514046016, 571162240, 623086080, 642557520, 685394688, 856743360, 934629120, 1028092032, 1142324480, 1285115040, 1370789376, 1713486720, 1869258240, 2056184064, 2284648960, 2570230080, 3426973440, 4112368128, 5140460160, 6853946880, 10280920320, 20561840640]

約数ペア:

[(1, 20561840640), (2, 10280920320), (3, 6853946880), (4, 5140460160), (5, 4112368128), (6, 3426973440), (8, 2570230080), (9, 2284648960), (10, 2056184064), (11, 1869258240), (12, 1713486720), (15, 1370789376), (16, 1285115040), (18, 1142324480), (20, 1028092032), (22, 934629120), (24, 856743360), (30, 685394688), (32, 642557520), (33, 623086080), (36, 571162240), (40, 514046016), (44, 467314560), (45, 456929792), (48, 428371680), (55, 373851648), (60, 342697344), (64, 321278760), (66, 311543040), (72, 285581120), (80, 257023008), (88, 233657280), (90, 228464896), (96, 214185840), (99, 207695360), (110, 186925824), (120, 171348672), (128, 160639380), (132, 155771520), (144, 142790560), (160, 128511504), (165, 124617216), (176, 116828640), (180, 114232448), (192, 107092920), (198, 103847680), (220, 93462912), (240, 85674336), (256, 80319690), (264, 77885760), (288, 71395280), (320, 64255752), (330, 62308608), (352, 58414320), (360, 57116224), (384, 53546460), (396, 51923840), (440, 46731456), (480, 42837168), (495, 41539072), (512, 40159845), (528, 38942880), (576, 35697640), (640, 32127876), (660, 31154304), (704, 29207160), (720, 28558112), (768, 26773230), (792, 25961920), (880, 23365728), (960, 21418584), (990, 20769536), (1056, 19471440), (1152, 17848820), (1280, 16063938), (1320, 15577152), (1408, 14603580), (1440, 14279056), (1536, 13386615), (1584, 12980960), (1760, 11682864), (1920, 10709292), (1980, 10384768), (2112, 9735720), (2304, 8924410), (2560, 8031969), (2640, 7788576), (2816, 7301790), (2880, 7139528), (3168, 6490480), (3520, 5841432), (3840, 5354646), (3960, 5192384), (4224, 4867860), (4608, 4462205), (5280, 3894288), (5632, 3650895), (5760, 3569764), (6336, 3245240), (7040, 2920716), (7680, 2677323), (7920, 2596192), (8448, 2433930), (10560, 1947144), (11520, 1784882), (12672, 1622620), (14080, 1460358), (15840, 1298096), (16896, 1216965), (21120, 973572), (23040, 892441), (25344, 811310), (28160, 730179), (31680, 649048), (42240, 486786), (50688, 405655), (63360, 324524), (81131, 253440), (84480, 243393), (126720, 162262)]