21299681920

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{991}}^1$

素因数の和:1135

約数の個数: 256

約数和(自身を含む): 57699164160

約数和(自身を除く): 36399482240

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 43, 44, 55, 64, 71, 80, 86, 88, 110, 128, 142, 160, 172, 176, 215, 220, 284, 320, 344, 352, 355, 430, 440, 473, 568, 640, 688, 704, 710, 781, 860, 880, 946, 991, 1136, 1376, 1408, 1420, 1562, 1720, 1760, 1892, 1982, 2272, 2365, 2752, 2840, 3053, 3124, 3440, 3520, 3784, 3905, 3964, 4544, 4730, 4955, 5504, 5680, 6106, 6248, 6880, 7040, 7568, 7810, 7928, 9088, 9460, 9910, 10901, 11360, 12212, 12496, 13760, 15136, 15265, 15620, 15856, 18920, 19820, 21802, 22720, 24424, 24992, 27520, 30272, 30530, 31240, 31712, 33583, 37840, 39640, 42613, 43604, 45440, 48848, 49984, 54505, 60544, 61060, 62480, 63424, 67166, 70361, 75680, 79280, 85226, 87208, 97696, 99968, 109010, 122120, 124960, 126848, 134332, 140722, 151360, 158560, 167915, 170452, 174416, 195392, 213065, 218020, 244240, 249920, 268664, 281444, 302720, 317120, 335830, 340904, 348832, 351805, 390784, 426130, 436040, 468743, 488480, 499840, 537328, 562888, 634240, 671660, 681808, 697664, 703610, 773971, 852260, 872080, 937486, 976960, 1074656, 1125776, 1343320, 1363616, 1395328, 1407220, 1547942, 1704520, 1744160, 1874972, 1953920, 2149312, 2251552, 2343715, 2686640, 2727232, 2814440, 3025523, 3095884, 3409040, 3488320, 3749944, 3869855, 4298624, 4503104, 4687430, 5373280, 5454464, 5628880, 6051046, 6191768, 6818080, 6976640, 7499888, 7739710, 9006208, 9374860, 10746560, 11257760, 12102092, 12383536, 13636160, 14999776, 15127615, 15479420, 18749720, 21493120, 22515520, 24204184, 24767072, 27272320, 29999552, 30255230, 30958840, 33280753, 37499440, 45031040, 48408368, 49534144, 59999104, 60510460, 61917680, 66561506, 74998880, 96816736, 99068288, 121020920, 123835360, 133123012, 149997760, 166403765, 193633472, 242041840, 247670720, 266246024, 299995520, 332807530, 387266944, 484083680, 495341440, 532492048, 665615060, 968167360, 1064984096, 1331230120, 1936334720, 2129968192, 2662460240, 4259936384, 5324920480, 10649840960, 21299681920]

約数ペア:

[(1, 21299681920), (2, 10649840960), (4, 5324920480), (5, 4259936384), (8, 2662460240), (10, 2129968192), (11, 1936334720), (16, 1331230120), (20, 1064984096), (22, 968167360), (32, 665615060), (40, 532492048), (43, 495341440), (44, 484083680), (55, 387266944), (64, 332807530), (71, 299995520), (80, 266246024), (86, 247670720), (88, 242041840), (110, 193633472), (128, 166403765), (142, 149997760), (160, 133123012), (172, 123835360), (176, 121020920), (215, 99068288), (220, 96816736), (284, 74998880), (320, 66561506), (344, 61917680), (352, 60510460), (355, 59999104), (430, 49534144), (440, 48408368), (473, 45031040), (568, 37499440), (640, 33280753), (688, 30958840), (704, 30255230), (710, 29999552), (781, 27272320), (860, 24767072), (880, 24204184), (946, 22515520), (991, 21493120), (1136, 18749720), (1376, 15479420), (1408, 15127615), (1420, 14999776), (1562, 13636160), (1720, 12383536), (1760, 12102092), (1892, 11257760), (1982, 10746560), (2272, 9374860), (2365, 9006208), (2752, 7739710), (2840, 7499888), (3053, 6976640), (3124, 6818080), (3440, 6191768), (3520, 6051046), (3784, 5628880), (3905, 5454464), (3964, 5373280), (4544, 4687430), (4730, 4503104), (4955, 4298624), (5504, 3869855), (5680, 3749944), (6106, 3488320), (6248, 3409040), (6880, 3095884), (7040, 3025523), (7568, 2814440), (7810, 2727232), (7928, 2686640), (9088, 2343715), (9460, 2251552), (9910, 2149312), (10901, 1953920), (11360, 1874972), (12212, 1744160), (12496, 1704520), (13760, 1547942), (15136, 1407220), (15265, 1395328), (15620, 1363616), (15856, 1343320), (18920, 1125776), (19820, 1074656), (21802, 976960), (22720, 937486), (24424, 872080), (24992, 852260), (27520, 773971), (30272, 703610), (30530, 697664), (31240, 681808), (31712, 671660), (33583, 634240), (37840, 562888), (39640, 537328), (42613, 499840), (43604, 488480), (45440, 468743), (48848, 436040), (49984, 426130), (54505, 390784), (60544, 351805), (61060, 348832), (62480, 340904), (63424, 335830), (67166, 317120), (70361, 302720), (75680, 281444), (79280, 268664), (85226, 249920), (87208, 244240), (97696, 218020), (99968, 213065), (109010, 195392), (122120, 174416), (124960, 170452), (126848, 167915), (134332, 158560), (140722, 151360)]