81030400

素因数分解:

$2^8\times 5^2\times {\mathrm{11}}^1\times {\mathrm{1151}}^1$

素因数の和:1188

約数の個数: 108

約数和(自身を含む): 218985984

約数和(自身を除く): 137955584

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 64, 80, 88, 100, 110, 128, 160, 176, 200, 220, 256, 275, 320, 352, 400, 440, 550, 640, 704, 800, 880, 1100, 1151, 1280, 1408, 1600, 1760, 2200, 2302, 2816, 3200, 3520, 4400, 4604, 5755, 6400, 7040, 8800, 9208, 11510, 12661, 14080, 17600, 18416, 23020, 25322, 28775, 35200, 36832, 46040, 50644, 57550, 63305, 70400, 73664, 92080, 101288, 115100, 126610, 147328, 184160, 202576, 230200, 253220, 294656, 316525, 368320, 405152, 460400, 506440, 633050, 736640, 810304, 920800, 1012880, 1266100, 1473280, 1620608, 1841600, 2025760, 2532200, 3241216, 3683200, 4051520, 5064400, 7366400, 8103040, 10128800, 16206080, 20257600, 40515200, 81030400]

約数ペア:

[(1, 81030400), (2, 40515200), (4, 20257600), (5, 16206080), (8, 10128800), (10, 8103040), (11, 7366400), (16, 5064400), (20, 4051520), (22, 3683200), (25, 3241216), (32, 2532200), (40, 2025760), (44, 1841600), (50, 1620608), (55, 1473280), (64, 1266100), (80, 1012880), (88, 920800), (100, 810304), (110, 736640), (128, 633050), (160, 506440), (176, 460400), (200, 405152), (220, 368320), (256, 316525), (275, 294656), (320, 253220), (352, 230200), (400, 202576), (440, 184160), (550, 147328), (640, 126610), (704, 115100), (800, 101288), (880, 92080), (1100, 73664), (1151, 70400), (1280, 63305), (1408, 57550), (1600, 50644), (1760, 46040), (2200, 36832), (2302, 35200), (2816, 28775), (3200, 25322), (3520, 23020), (4400, 18416), (4604, 17600), (5755, 14080), (6400, 12661), (7040, 11510), (8800, 9208)]