261895680

素因数分解:

$2^9\times 3^5\times 5^1\times {\mathrm{421}}^1$

素因数の和:459

約数の個数: 240

約数和(自身を含む): 942845904

約数和(自身を除く): 680950224

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 81, 90, 96, 108, 120, 128, 135, 144, 160, 162, 180, 192, 216, 240, 243, 256, 270, 288, 320, 324, 360, 384, 405, 421, 432, 480, 486, 512, 540, 576, 640, 648, 720, 768, 810, 842, 864, 960, 972, 1080, 1152, 1215, 1263, 1280, 1296, 1440, 1536, 1620, 1684, 1728, 1920, 1944, 2105, 2160, 2304, 2430, 2526, 2560, 2592, 2880, 3240, 3368, 3456, 3789, 3840, 3888, 4210, 4320, 4608, 4860, 5052, 5184, 5760, 6315, 6480, 6736, 6912, 7578, 7680, 7776, 8420, 8640, 9720, 10104, 10368, 11367, 11520, 12630, 12960, 13472, 13824, 15156, 15552, 16840, 17280, 18945, 19440, 20208, 20736, 22734, 23040, 25260, 25920, 26944, 30312, 31104, 33680, 34101, 34560, 37890, 38880, 40416, 41472, 45468, 50520, 51840, 53888, 56835, 60624, 62208, 67360, 68202, 69120, 75780, 77760, 80832, 90936, 101040, 102303, 103680, 107776, 113670, 121248, 124416, 134720, 136404, 151560, 155520, 161664, 170505, 181872, 202080, 204606, 207360, 215552, 227340, 242496, 269440, 272808, 303120, 311040, 323328, 341010, 363744, 404160, 409212, 454680, 484992, 511515, 538880, 545616, 606240, 622080, 646656, 682020, 727488, 808320, 818424, 909360, 969984, 1023030, 1077760, 1091232, 1212480, 1364040, 1454976, 1616640, 1636848, 1818720, 1939968, 2046060, 2182464, 2424960, 2728080, 2909952, 3233280, 3273696, 3637440, 4092120, 4364928, 4849920, 5456160, 5819904, 6547392, 7274880, 8184240, 8729856, 9699840, 10912320, 13094784, 14549760, 16368480, 17459712, 21824640, 26189568, 29099520, 32736960, 43649280, 52379136, 65473920, 87298560, 130947840, 261895680]

約数ペア:

[(1, 261895680), (2, 130947840), (3, 87298560), (4, 65473920), (5, 52379136), (6, 43649280), (8, 32736960), (9, 29099520), (10, 26189568), (12, 21824640), (15, 17459712), (16, 16368480), (18, 14549760), (20, 13094784), (24, 10912320), (27, 9699840), (30, 8729856), (32, 8184240), (36, 7274880), (40, 6547392), (45, 5819904), (48, 5456160), (54, 4849920), (60, 4364928), (64, 4092120), (72, 3637440), (80, 3273696), (81, 3233280), (90, 2909952), (96, 2728080), (108, 2424960), (120, 2182464), (128, 2046060), (135, 1939968), (144, 1818720), (160, 1636848), (162, 1616640), (180, 1454976), (192, 1364040), (216, 1212480), (240, 1091232), (243, 1077760), (256, 1023030), (270, 969984), (288, 909360), (320, 818424), (324, 808320), (360, 727488), (384, 682020), (405, 646656), (421, 622080), (432, 606240), (480, 545616), (486, 538880), (512, 511515), (540, 484992), (576, 454680), (640, 409212), (648, 404160), (720, 363744), (768, 341010), (810, 323328), (842, 311040), (864, 303120), (960, 272808), (972, 269440), (1080, 242496), (1152, 227340), (1215, 215552), (1263, 207360), (1280, 204606), (1296, 202080), (1440, 181872), (1536, 170505), (1620, 161664), (1684, 155520), (1728, 151560), (1920, 136404), (1944, 134720), (2105, 124416), (2160, 121248), (2304, 113670), (2430, 107776), (2526, 103680), (2560, 102303), (2592, 101040), (2880, 90936), (3240, 80832), (3368, 77760), (3456, 75780), (3789, 69120), (3840, 68202), (3888, 67360), (4210, 62208), (4320, 60624), (4608, 56835), (4860, 53888), (5052, 51840), (5184, 50520), (5760, 45468), (6315, 41472), (6480, 40416), (6736, 38880), (6912, 37890), (7578, 34560), (7680, 34101), (7776, 33680), (8420, 31104), (8640, 30312), (9720, 26944), (10104, 25920), (10368, 25260), (11367, 23040), (11520, 22734), (12630, 20736), (12960, 20208), (13472, 19440), (13824, 18945), (15156, 17280), (15552, 16840)]