81578880

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{4721}}^1$

素因数の和:4749

約数の個数: 128

約数和(自身を含む): 288986400

約数和(自身を除く): 207407520

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, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 270, 288, 320, 360, 384, 432, 480, 540, 576, 640, 720, 864, 960, 1080, 1152, 1440, 1728, 1920, 2160, 2880, 3456, 4320, 4721, 5760, 8640, 9442, 14163, 17280, 18884, 23605, 28326, 37768, 42489, 47210, 56652, 70815, 75536, 84978, 94420, 113304, 127467, 141630, 151072, 169956, 188840, 212445, 226608, 254934, 283260, 302144, 339912, 377680, 424890, 453216, 509868, 566520, 604288, 637335, 679824, 755360, 849780, 906432, 1019736, 1133040, 1274670, 1359648, 1510720, 1699560, 1812864, 2039472, 2266080, 2549340, 2719296, 3021440, 3399120, 4078944, 4532160, 5098680, 5438592, 6798240, 8157888, 9064320, 10197360, 13596480, 16315776, 20394720, 27192960, 40789440, 81578880]

約数ペア:

[(1, 81578880), (2, 40789440), (3, 27192960), (4, 20394720), (5, 16315776), (6, 13596480), (8, 10197360), (9, 9064320), (10, 8157888), (12, 6798240), (15, 5438592), (16, 5098680), (18, 4532160), (20, 4078944), (24, 3399120), (27, 3021440), (30, 2719296), (32, 2549340), (36, 2266080), (40, 2039472), (45, 1812864), (48, 1699560), (54, 1510720), (60, 1359648), (64, 1274670), (72, 1133040), (80, 1019736), (90, 906432), (96, 849780), (108, 755360), (120, 679824), (128, 637335), (135, 604288), (144, 566520), (160, 509868), (180, 453216), (192, 424890), (216, 377680), (240, 339912), (270, 302144), (288, 283260), (320, 254934), (360, 226608), (384, 212445), (432, 188840), (480, 169956), (540, 151072), (576, 141630), (640, 127467), (720, 113304), (864, 94420), (960, 84978), (1080, 75536), (1152, 70815), (1440, 56652), (1728, 47210), (1920, 42489), (2160, 37768), (2880, 28326), (3456, 23605), (4320, 18884), (4721, 17280), (5760, 14163), (8640, 9442)]