1991926720

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{17}}^3\times {\mathrm{181}}^1$

素因数の和:256

約数の個数: 224

約数和(自身を含む): 5791443840

約数和(自身を除く): 3799517120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 56, 64, 68, 70, 80, 85, 112, 119, 136, 140, 160, 170, 181, 224, 238, 272, 280, 289, 320, 340, 362, 448, 476, 544, 560, 578, 595, 680, 724, 905, 952, 1088, 1120, 1156, 1190, 1267, 1360, 1445, 1448, 1810, 1904, 2023, 2240, 2312, 2380, 2534, 2720, 2890, 2896, 3077, 3620, 3808, 4046, 4624, 4760, 4913, 5068, 5440, 5780, 5792, 6154, 6335, 7240, 7616, 8092, 9248, 9520, 9826, 10115, 10136, 11560, 11584, 12308, 12670, 14480, 15385, 16184, 18496, 19040, 19652, 20230, 20272, 21539, 23120, 24565, 24616, 25340, 28960, 30770, 32368, 34391, 38080, 39304, 40460, 40544, 43078, 46240, 49130, 49232, 50680, 52309, 57920, 61540, 64736, 68782, 78608, 80920, 81088, 86156, 92480, 98260, 98464, 101360, 104618, 107695, 123080, 129472, 137564, 157216, 161840, 171955, 172312, 196520, 196928, 202720, 209236, 215390, 246160, 261545, 275128, 314432, 323680, 343910, 344624, 366163, 393040, 405440, 418472, 430780, 492320, 523090, 550256, 647360, 687820, 689248, 732326, 786080, 836944, 861560, 889253, 984640, 1046180, 1100512, 1375640, 1378496, 1464652, 1572160, 1673888, 1723120, 1778506, 1830815, 2092360, 2201024, 2751280, 2929304, 3347776, 3446240, 3557012, 3661630, 4184720, 4446265, 5502560, 5858608, 6224771, 6892480, 7114024, 7323260, 8369440, 8892530, 11005120, 11717216, 12449542, 14228048, 14646520, 16738880, 17785060, 23434432, 24899084, 28456096, 29293040, 31123855, 35570120, 49798168, 56912192, 58586080, 62247710, 71140240, 99596336, 117172160, 124495420, 142280480, 199192672, 248990840, 284560960, 398385344, 497981680, 995963360, 1991926720]

約数ペア:

[(1, 1991926720), (2, 995963360), (4, 497981680), (5, 398385344), (7, 284560960), (8, 248990840), (10, 199192672), (14, 142280480), (16, 124495420), (17, 117172160), (20, 99596336), (28, 71140240), (32, 62247710), (34, 58586080), (35, 56912192), (40, 49798168), (56, 35570120), (64, 31123855), (68, 29293040), (70, 28456096), (80, 24899084), (85, 23434432), (112, 17785060), (119, 16738880), (136, 14646520), (140, 14228048), (160, 12449542), (170, 11717216), (181, 11005120), (224, 8892530), (238, 8369440), (272, 7323260), (280, 7114024), (289, 6892480), (320, 6224771), (340, 5858608), (362, 5502560), (448, 4446265), (476, 4184720), (544, 3661630), (560, 3557012), (578, 3446240), (595, 3347776), (680, 2929304), (724, 2751280), (905, 2201024), (952, 2092360), (1088, 1830815), (1120, 1778506), (1156, 1723120), (1190, 1673888), (1267, 1572160), (1360, 1464652), (1445, 1378496), (1448, 1375640), (1810, 1100512), (1904, 1046180), (2023, 984640), (2240, 889253), (2312, 861560), (2380, 836944), (2534, 786080), (2720, 732326), (2890, 689248), (2896, 687820), (3077, 647360), (3620, 550256), (3808, 523090), (4046, 492320), (4624, 430780), (4760, 418472), (4913, 405440), (5068, 393040), (5440, 366163), (5780, 344624), (5792, 343910), (6154, 323680), (6335, 314432), (7240, 275128), (7616, 261545), (8092, 246160), (9248, 215390), (9520, 209236), (9826, 202720), (10115, 196928), (10136, 196520), (11560, 172312), (11584, 171955), (12308, 161840), (12670, 157216), (14480, 137564), (15385, 129472), (16184, 123080), (18496, 107695), (19040, 104618), (19652, 101360), (20230, 98464), (20272, 98260), (21539, 92480), (23120, 86156), (24565, 81088), (24616, 80920), (25340, 78608), (28960, 68782), (30770, 64736), (32368, 61540), (34391, 57920), (38080, 52309), (39304, 50680), (40460, 49232), (40544, 49130), (43078, 46240)]