1991498880

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2087}}^1$

素因数の和:2187

約数の個数: 256

約数和(自身を含む): 7360450560

約数和(自身を除く): 5368951680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 71, 80, 84, 96, 105, 112, 120, 128, 140, 142, 160, 168, 192, 210, 213, 224, 240, 280, 284, 320, 336, 355, 384, 420, 426, 448, 480, 497, 560, 568, 640, 672, 710, 840, 852, 896, 960, 994, 1065, 1120, 1136, 1344, 1420, 1491, 1680, 1704, 1920, 1988, 2087, 2130, 2240, 2272, 2485, 2688, 2840, 2982, 3360, 3408, 3976, 4174, 4260, 4480, 4544, 4970, 5680, 5964, 6261, 6720, 6816, 7455, 7952, 8348, 8520, 9088, 9940, 10435, 11360, 11928, 12522, 13440, 13632, 14609, 14910, 15904, 16696, 17040, 19880, 20870, 22720, 23856, 25044, 27264, 29218, 29820, 31305, 31808, 33392, 34080, 39760, 41740, 43827, 45440, 47712, 50088, 58436, 59640, 62610, 63616, 66784, 68160, 73045, 79520, 83480, 87654, 95424, 100176, 116872, 119280, 125220, 133568, 136320, 146090, 148177, 159040, 166960, 175308, 190848, 200352, 219135, 233744, 238560, 250440, 267136, 292180, 296354, 318080, 333920, 350616, 400704, 438270, 444531, 467488, 477120, 500880, 584360, 592708, 667840, 701232, 740885, 801408, 876540, 889062, 934976, 954240, 1001760, 1037239, 1168720, 1185416, 1335680, 1402464, 1481770, 1753080, 1778124, 1869952, 2003520, 2074478, 2222655, 2337440, 2370832, 2804928, 2963540, 3111717, 3506160, 3556248, 4007040, 4148956, 4445310, 4674880, 4741664, 5186195, 5609856, 5927080, 6223434, 7012320, 7112496, 8297912, 8890620, 9349760, 9483328, 10372390, 11854160, 12446868, 14024640, 14224992, 15558585, 16595824, 17781240, 18966656, 20744780, 23708320, 24893736, 28049280, 28449984, 31117170, 33191648, 35562480, 41489560, 47416640, 49787472, 56899968, 62234340, 66383296, 71124960, 82979120, 94833280, 99574944, 124468680, 132766592, 142249920, 165958240, 199149888, 248937360, 284499840, 331916480, 398299776, 497874720, 663832960, 995749440, 1991498880]

約数ペア:

[(1, 1991498880), (2, 995749440), (3, 663832960), (4, 497874720), (5, 398299776), (6, 331916480), (7, 284499840), (8, 248937360), (10, 199149888), (12, 165958240), (14, 142249920), (15, 132766592), (16, 124468680), (20, 99574944), (21, 94833280), (24, 82979120), (28, 71124960), (30, 66383296), (32, 62234340), (35, 56899968), (40, 49787472), (42, 47416640), (48, 41489560), (56, 35562480), (60, 33191648), (64, 31117170), (70, 28449984), (71, 28049280), (80, 24893736), (84, 23708320), (96, 20744780), (105, 18966656), (112, 17781240), (120, 16595824), (128, 15558585), (140, 14224992), (142, 14024640), (160, 12446868), (168, 11854160), (192, 10372390), (210, 9483328), (213, 9349760), (224, 8890620), (240, 8297912), (280, 7112496), (284, 7012320), (320, 6223434), (336, 5927080), (355, 5609856), (384, 5186195), (420, 4741664), (426, 4674880), (448, 4445310), (480, 4148956), (497, 4007040), (560, 3556248), (568, 3506160), (640, 3111717), (672, 2963540), (710, 2804928), (840, 2370832), (852, 2337440), (896, 2222655), (960, 2074478), (994, 2003520), (1065, 1869952), (1120, 1778124), (1136, 1753080), (1344, 1481770), (1420, 1402464), (1491, 1335680), (1680, 1185416), (1704, 1168720), (1920, 1037239), (1988, 1001760), (2087, 954240), (2130, 934976), (2240, 889062), (2272, 876540), (2485, 801408), (2688, 740885), (2840, 701232), (2982, 667840), (3360, 592708), (3408, 584360), (3976, 500880), (4174, 477120), (4260, 467488), (4480, 444531), (4544, 438270), (4970, 400704), (5680, 350616), (5964, 333920), (6261, 318080), (6720, 296354), (6816, 292180), (7455, 267136), (7952, 250440), (8348, 238560), (8520, 233744), (9088, 219135), (9940, 200352), (10435, 190848), (11360, 175308), (11928, 166960), (12522, 159040), (13440, 148177), (13632, 146090), (14609, 136320), (14910, 133568), (15904, 125220), (16696, 119280), (17040, 116872), (19880, 100176), (20870, 95424), (22720, 87654), (23856, 83480), (25044, 79520), (27264, 73045), (29218, 68160), (29820, 66784), (31305, 63616), (31808, 62610), (33392, 59640), (34080, 58436), (39760, 50088), (41740, 47712), (43827, 45440)]