81908640

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{5171}}^1$

素因数の和:5203

約数の個数: 144

約数和(自身を含む): 304982496

約数和(自身を除く): 223073856

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, 66, 72, 80, 88, 90, 96, 99, 110, 120, 132, 144, 160, 165, 176, 180, 198, 220, 240, 264, 288, 330, 352, 360, 396, 440, 480, 495, 528, 660, 720, 792, 880, 990, 1056, 1320, 1440, 1584, 1760, 1980, 2640, 3168, 3960, 5171, 5280, 7920, 10342, 15513, 15840, 20684, 25855, 31026, 41368, 46539, 51710, 56881, 62052, 77565, 82736, 93078, 103420, 113762, 124104, 155130, 165472, 170643, 186156, 206840, 227524, 232695, 248208, 284405, 310260, 341286, 372312, 413680, 455048, 465390, 496416, 511929, 568810, 620520, 682572, 744624, 827360, 853215, 910096, 930780, 1023858, 1137620, 1241040, 1365144, 1489248, 1706430, 1820192, 1861560, 2047716, 2275240, 2482080, 2559645, 2730288, 3412860, 3723120, 4095432, 4550480, 5119290, 5460576, 6825720, 7446240, 8190864, 9100960, 10238580, 13651440, 16381728, 20477160, 27302880, 40954320, 81908640]

約数ペア:

[(1, 81908640), (2, 40954320), (3, 27302880), (4, 20477160), (5, 16381728), (6, 13651440), (8, 10238580), (9, 9100960), (10, 8190864), (11, 7446240), (12, 6825720), (15, 5460576), (16, 5119290), (18, 4550480), (20, 4095432), (22, 3723120), (24, 3412860), (30, 2730288), (32, 2559645), (33, 2482080), (36, 2275240), (40, 2047716), (44, 1861560), (45, 1820192), (48, 1706430), (55, 1489248), (60, 1365144), (66, 1241040), (72, 1137620), (80, 1023858), (88, 930780), (90, 910096), (96, 853215), (99, 827360), (110, 744624), (120, 682572), (132, 620520), (144, 568810), (160, 511929), (165, 496416), (176, 465390), (180, 455048), (198, 413680), (220, 372312), (240, 341286), (264, 310260), (288, 284405), (330, 248208), (352, 232695), (360, 227524), (396, 206840), (440, 186156), (480, 170643), (495, 165472), (528, 155130), (660, 124104), (720, 113762), (792, 103420), (880, 93078), (990, 82736), (1056, 77565), (1320, 62052), (1440, 56881), (1584, 51710), (1760, 46539), (1980, 41368), (2640, 31026), (3168, 25855), (3960, 20684), (5171, 15840), (5280, 15513), (7920, 10342)]