81128960

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:144

約数の個数: 160

約数和(自身を含む): 220378752

約数和(自身を除く): 139249792

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 43, 44, 55, 64, 67, 80, 86, 88, 110, 128, 134, 160, 172, 176, 215, 220, 256, 268, 320, 335, 344, 352, 430, 440, 473, 512, 536, 640, 670, 688, 704, 737, 860, 880, 946, 1072, 1280, 1340, 1376, 1408, 1474, 1720, 1760, 1892, 2144, 2365, 2560, 2680, 2752, 2816, 2881, 2948, 3440, 3520, 3685, 3784, 4288, 4730, 5360, 5504, 5632, 5762, 5896, 6880, 7040, 7370, 7568, 8576, 9460, 10720, 11008, 11524, 11792, 13760, 14080, 14405, 14740, 15136, 17152, 18920, 21440, 22016, 23048, 23584, 27520, 28160, 28810, 29480, 30272, 31691, 34304, 37840, 42880, 46096, 47168, 55040, 57620, 58960, 60544, 63382, 75680, 85760, 92192, 94336, 110080, 115240, 117920, 121088, 126764, 151360, 158455, 171520, 184384, 188672, 230480, 235840, 242176, 253528, 302720, 316910, 368768, 377344, 460960, 471680, 507056, 605440, 633820, 737536, 921920, 943360, 1014112, 1210880, 1267640, 1475072, 1843840, 1886720, 2028224, 2535280, 3687680, 4056448, 5070560, 7375360, 8112896, 10141120, 16225792, 20282240, 40564480, 81128960]

約数ペア:

[(1, 81128960), (2, 40564480), (4, 20282240), (5, 16225792), (8, 10141120), (10, 8112896), (11, 7375360), (16, 5070560), (20, 4056448), (22, 3687680), (32, 2535280), (40, 2028224), (43, 1886720), (44, 1843840), (55, 1475072), (64, 1267640), (67, 1210880), (80, 1014112), (86, 943360), (88, 921920), (110, 737536), (128, 633820), (134, 605440), (160, 507056), (172, 471680), (176, 460960), (215, 377344), (220, 368768), (256, 316910), (268, 302720), (320, 253528), (335, 242176), (344, 235840), (352, 230480), (430, 188672), (440, 184384), (473, 171520), (512, 158455), (536, 151360), (640, 126764), (670, 121088), (688, 117920), (704, 115240), (737, 110080), (860, 94336), (880, 92192), (946, 85760), (1072, 75680), (1280, 63382), (1340, 60544), (1376, 58960), (1408, 57620), (1474, 55040), (1720, 47168), (1760, 46096), (1892, 42880), (2144, 37840), (2365, 34304), (2560, 31691), (2680, 30272), (2752, 29480), (2816, 28810), (2881, 28160), (2948, 27520), (3440, 23584), (3520, 23048), (3685, 22016), (3784, 21440), (4288, 18920), (4730, 17152), (5360, 15136), (5504, 14740), (5632, 14405), (5762, 14080), (5896, 13760), (6880, 11792), (7040, 11524), (7370, 11008), (7568, 10720), (8576, 9460)]