205131520

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{857}}^1$

素因数の和:906

約数の個数: 144

約数和(自身を含む): 568215648

約数和(自身を除く): 363084128

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 32, 34, 40, 44, 55, 64, 68, 80, 85, 88, 110, 128, 136, 160, 170, 176, 187, 220, 256, 272, 320, 340, 352, 374, 440, 544, 640, 680, 704, 748, 857, 880, 935, 1088, 1280, 1360, 1408, 1496, 1714, 1760, 1870, 2176, 2720, 2816, 2992, 3428, 3520, 3740, 4285, 4352, 5440, 5984, 6856, 7040, 7480, 8570, 9427, 10880, 11968, 13712, 14080, 14569, 14960, 17140, 18854, 21760, 23936, 27424, 29138, 29920, 34280, 37708, 47135, 47872, 54848, 58276, 59840, 68560, 72845, 75416, 94270, 109696, 116552, 119680, 137120, 145690, 150832, 160259, 188540, 219392, 233104, 239360, 274240, 291380, 301664, 320518, 377080, 466208, 548480, 582760, 603328, 641036, 754160, 801295, 932416, 1096960, 1165520, 1206656, 1282072, 1508320, 1602590, 1864832, 2331040, 2413312, 2564144, 3016640, 3205180, 3729664, 4662080, 5128288, 6033280, 6410360, 9324160, 10256576, 12066560, 12820720, 18648320, 20513152, 25641440, 41026304, 51282880, 102565760, 205131520]

約数ペア:

[(1, 205131520), (2, 102565760), (4, 51282880), (5, 41026304), (8, 25641440), (10, 20513152), (11, 18648320), (16, 12820720), (17, 12066560), (20, 10256576), (22, 9324160), (32, 6410360), (34, 6033280), (40, 5128288), (44, 4662080), (55, 3729664), (64, 3205180), (68, 3016640), (80, 2564144), (85, 2413312), (88, 2331040), (110, 1864832), (128, 1602590), (136, 1508320), (160, 1282072), (170, 1206656), (176, 1165520), (187, 1096960), (220, 932416), (256, 801295), (272, 754160), (320, 641036), (340, 603328), (352, 582760), (374, 548480), (440, 466208), (544, 377080), (640, 320518), (680, 301664), (704, 291380), (748, 274240), (857, 239360), (880, 233104), (935, 219392), (1088, 188540), (1280, 160259), (1360, 150832), (1408, 145690), (1496, 137120), (1714, 119680), (1760, 116552), (1870, 109696), (2176, 94270), (2720, 75416), (2816, 72845), (2992, 68560), (3428, 59840), (3520, 58276), (3740, 54848), (4285, 47872), (4352, 47135), (5440, 37708), (5984, 34280), (6856, 29920), (7040, 29138), (7480, 27424), (8570, 23936), (9427, 21760), (10880, 18854), (11968, 17140), (13712, 14960), (14080, 14569)]