81561984

素因数分解:

$2^7\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1597}}^1$

素因数の和:1640

約数の個数: 128

約数和(自身を含む): 260793600

約数和(自身を除く): 179231616

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 19, 21, 24, 28, 32, 38, 42, 48, 56, 57, 64, 76, 84, 96, 112, 114, 128, 133, 152, 168, 192, 224, 228, 266, 304, 336, 384, 399, 448, 456, 532, 608, 672, 798, 896, 912, 1064, 1216, 1344, 1596, 1597, 1824, 2128, 2432, 2688, 3192, 3194, 3648, 4256, 4791, 6384, 6388, 7296, 8512, 9582, 11179, 12768, 12776, 17024, 19164, 22358, 25536, 25552, 30343, 33537, 38328, 44716, 51072, 51104, 60686, 67074, 76656, 89432, 91029, 102208, 121372, 134148, 153312, 178864, 182058, 204416, 212401, 242744, 268296, 306624, 357728, 364116, 424802, 485488, 536592, 613248, 637203, 715456, 728232, 849604, 970976, 1073184, 1274406, 1430912, 1456464, 1699208, 1941952, 2146368, 2548812, 2912928, 3398416, 3883904, 4292736, 5097624, 5825856, 6796832, 10195248, 11651712, 13593664, 20390496, 27187328, 40780992, 81561984]

約数ペア:

[(1, 81561984), (2, 40780992), (3, 27187328), (4, 20390496), (6, 13593664), (7, 11651712), (8, 10195248), (12, 6796832), (14, 5825856), (16, 5097624), (19, 4292736), (21, 3883904), (24, 3398416), (28, 2912928), (32, 2548812), (38, 2146368), (42, 1941952), (48, 1699208), (56, 1456464), (57, 1430912), (64, 1274406), (76, 1073184), (84, 970976), (96, 849604), (112, 728232), (114, 715456), (128, 637203), (133, 613248), (152, 536592), (168, 485488), (192, 424802), (224, 364116), (228, 357728), (266, 306624), (304, 268296), (336, 242744), (384, 212401), (399, 204416), (448, 182058), (456, 178864), (532, 153312), (608, 134148), (672, 121372), (798, 102208), (896, 91029), (912, 89432), (1064, 76656), (1216, 67074), (1344, 60686), (1596, 51104), (1597, 51072), (1824, 44716), (2128, 38328), (2432, 33537), (2688, 30343), (3192, 25552), (3194, 25536), (3648, 22358), (4256, 19164), (4791, 17024), (6384, 12776), (6388, 12768), (7296, 11179), (8512, 9582)]