261681840

素因数分解:

$2^4\times 3^6\times 5^1\times 7^1\times {\mathrm{641}}^1$

素因数の和:679

約数の個数: 280

約数和(自身を含む): 1044138528

約数和(自身を除く): 782456688

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 81, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 162, 168, 180, 189, 210, 216, 240, 243, 252, 270, 280, 315, 324, 336, 360, 378, 405, 420, 432, 486, 504, 540, 560, 567, 630, 641, 648, 720, 729, 756, 810, 840, 945, 972, 1008, 1080, 1134, 1215, 1260, 1282, 1296, 1458, 1512, 1620, 1680, 1701, 1890, 1923, 1944, 2160, 2268, 2430, 2520, 2564, 2835, 2916, 3024, 3205, 3240, 3402, 3645, 3780, 3846, 3888, 4487, 4536, 4860, 5040, 5103, 5128, 5670, 5769, 5832, 6410, 6480, 6804, 7290, 7560, 7692, 8505, 8974, 9072, 9615, 9720, 10206, 10256, 11340, 11538, 11664, 12820, 13461, 13608, 14580, 15120, 15384, 17010, 17307, 17948, 19230, 19440, 20412, 22435, 22680, 23076, 25515, 25640, 26922, 27216, 28845, 29160, 30768, 34020, 34614, 35896, 38460, 40383, 40824, 44870, 45360, 46152, 51030, 51280, 51921, 53844, 57690, 58320, 67305, 68040, 69228, 71792, 76920, 80766, 81648, 86535, 89740, 92304, 102060, 103842, 107688, 115380, 121149, 134610, 136080, 138456, 153840, 155763, 161532, 173070, 179480, 201915, 204120, 207684, 215376, 230760, 242298, 259605, 269220, 276912, 311526, 323064, 346140, 358960, 363447, 403830, 408240, 415368, 461520, 467289, 484596, 519210, 538440, 605745, 623052, 646128, 692280, 726894, 778815, 807660, 830736, 934578, 969192, 1038420, 1076880, 1090341, 1211490, 1246104, 1384560, 1453788, 1557630, 1615320, 1817235, 1869156, 1938384, 2076840, 2180682, 2336445, 2422980, 2492208, 2907576, 3115260, 3230640, 3271023, 3634470, 3738312, 4153680, 4361364, 4672890, 4845960, 5451705, 5815152, 6230520, 6542046, 7268940, 7476624, 8722728, 9345780, 9691920, 10903410, 12461040, 13084092, 14537880, 16355115, 17445456, 18691560, 21806820, 26168184, 29075760, 32710230, 37383120, 43613640, 52336368, 65420460, 87227280, 130840920, 261681840]

約数ペア:

[(1, 261681840), (2, 130840920), (3, 87227280), (4, 65420460), (5, 52336368), (6, 43613640), (7, 37383120), (8, 32710230), (9, 29075760), (10, 26168184), (12, 21806820), (14, 18691560), (15, 17445456), (16, 16355115), (18, 14537880), (20, 13084092), (21, 12461040), (24, 10903410), (27, 9691920), (28, 9345780), (30, 8722728), (35, 7476624), (36, 7268940), (40, 6542046), (42, 6230520), (45, 5815152), (48, 5451705), (54, 4845960), (56, 4672890), (60, 4361364), (63, 4153680), (70, 3738312), (72, 3634470), (80, 3271023), (81, 3230640), (84, 3115260), (90, 2907576), (105, 2492208), (108, 2422980), (112, 2336445), (120, 2180682), (126, 2076840), (135, 1938384), (140, 1869156), (144, 1817235), (162, 1615320), (168, 1557630), (180, 1453788), (189, 1384560), (210, 1246104), (216, 1211490), (240, 1090341), (243, 1076880), (252, 1038420), (270, 969192), (280, 934578), (315, 830736), (324, 807660), (336, 778815), (360, 726894), (378, 692280), (405, 646128), (420, 623052), (432, 605745), (486, 538440), (504, 519210), (540, 484596), (560, 467289), (567, 461520), (630, 415368), (641, 408240), (648, 403830), (720, 363447), (729, 358960), (756, 346140), (810, 323064), (840, 311526), (945, 276912), (972, 269220), (1008, 259605), (1080, 242298), (1134, 230760), (1215, 215376), (1260, 207684), (1282, 204120), (1296, 201915), (1458, 179480), (1512, 173070), (1620, 161532), (1680, 155763), (1701, 153840), (1890, 138456), (1923, 136080), (1944, 134610), (2160, 121149), (2268, 115380), (2430, 107688), (2520, 103842), (2564, 102060), (2835, 92304), (2916, 89740), (3024, 86535), (3205, 81648), (3240, 80766), (3402, 76920), (3645, 71792), (3780, 69228), (3846, 68040), (3888, 67305), (4487, 58320), (4536, 57690), (4860, 53844), (5040, 51921), (5103, 51280), (5128, 51030), (5670, 46152), (5769, 45360), (5832, 44870), (6410, 40824), (6480, 40383), (6804, 38460), (7290, 35896), (7560, 34614), (7692, 34020), (8505, 30768), (8974, 29160), (9072, 28845), (9615, 27216), (9720, 26922), (10206, 25640), (10256, 25515), (11340, 23076), (11538, 22680), (11664, 22435), (12820, 20412), (13461, 19440), (13608, 19230), (14580, 17948), (15120, 17307), (15384, 17010)]