81505440

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{331}}^1$

素因数の和:377

約数の個数: 240

約数和(自身を含む): 303700320

約数和(自身を除く): 222194880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 32, 36, 38, 40, 45, 48, 54, 57, 60, 72, 76, 80, 81, 90, 95, 96, 108, 114, 120, 135, 144, 152, 160, 162, 171, 180, 190, 216, 228, 240, 270, 285, 288, 304, 324, 331, 342, 360, 380, 405, 432, 456, 480, 513, 540, 570, 608, 648, 662, 684, 720, 760, 810, 855, 864, 912, 993, 1026, 1080, 1140, 1296, 1324, 1368, 1440, 1520, 1539, 1620, 1655, 1710, 1824, 1986, 2052, 2160, 2280, 2565, 2592, 2648, 2736, 2979, 3040, 3078, 3240, 3310, 3420, 3972, 4104, 4320, 4560, 4965, 5130, 5296, 5472, 5958, 6156, 6289, 6480, 6620, 6840, 7695, 7944, 8208, 8937, 9120, 9930, 10260, 10592, 11916, 12312, 12578, 12960, 13240, 13680, 14895, 15390, 15888, 16416, 17874, 18867, 19860, 20520, 23832, 24624, 25156, 26480, 26811, 27360, 29790, 30780, 31445, 31776, 35748, 37734, 39720, 41040, 44685, 47664, 49248, 50312, 52960, 53622, 56601, 59580, 61560, 62890, 71496, 75468, 79440, 82080, 89370, 94335, 95328, 100624, 107244, 113202, 119160, 123120, 125780, 134055, 142992, 150936, 158880, 169803, 178740, 188670, 201248, 214488, 226404, 238320, 246240, 251560, 268110, 283005, 285984, 301872, 339606, 357480, 377340, 428976, 452808, 476640, 503120, 509409, 536220, 566010, 603744, 679212, 714960, 754680, 849015, 857952, 905616, 1006240, 1018818, 1072440, 1132020, 1358424, 1429920, 1509360, 1698030, 1811232, 2037636, 2144880, 2264040, 2547045, 2716848, 3018720, 3396060, 4075272, 4289760, 4528080, 5094090, 5433696, 6792120, 8150544, 9056160, 10188180, 13584240, 16301088, 20376360, 27168480, 40752720, 81505440]

約数ペア:

[(1, 81505440), (2, 40752720), (3, 27168480), (4, 20376360), (5, 16301088), (6, 13584240), (8, 10188180), (9, 9056160), (10, 8150544), (12, 6792120), (15, 5433696), (16, 5094090), (18, 4528080), (19, 4289760), (20, 4075272), (24, 3396060), (27, 3018720), (30, 2716848), (32, 2547045), (36, 2264040), (38, 2144880), (40, 2037636), (45, 1811232), (48, 1698030), (54, 1509360), (57, 1429920), (60, 1358424), (72, 1132020), (76, 1072440), (80, 1018818), (81, 1006240), (90, 905616), (95, 857952), (96, 849015), (108, 754680), (114, 714960), (120, 679212), (135, 603744), (144, 566010), (152, 536220), (160, 509409), (162, 503120), (171, 476640), (180, 452808), (190, 428976), (216, 377340), (228, 357480), (240, 339606), (270, 301872), (285, 285984), (288, 283005), (304, 268110), (324, 251560), (331, 246240), (342, 238320), (360, 226404), (380, 214488), (405, 201248), (432, 188670), (456, 178740), (480, 169803), (513, 158880), (540, 150936), (570, 142992), (608, 134055), (648, 125780), (662, 123120), (684, 119160), (720, 113202), (760, 107244), (810, 100624), (855, 95328), (864, 94335), (912, 89370), (993, 82080), (1026, 79440), (1080, 75468), (1140, 71496), (1296, 62890), (1324, 61560), (1368, 59580), (1440, 56601), (1520, 53622), (1539, 52960), (1620, 50312), (1655, 49248), (1710, 47664), (1824, 44685), (1986, 41040), (2052, 39720), (2160, 37734), (2280, 35748), (2565, 31776), (2592, 31445), (2648, 30780), (2736, 29790), (2979, 27360), (3040, 26811), (3078, 26480), (3240, 25156), (3310, 24624), (3420, 23832), (3972, 20520), (4104, 19860), (4320, 18867), (4560, 17874), (4965, 16416), (5130, 15888), (5296, 15390), (5472, 14895), (5958, 13680), (6156, 13240), (6289, 12960), (6480, 12578), (6620, 12312), (6840, 11916), (7695, 10592), (7944, 10260), (8208, 9930), (8937, 9120)]