640403712

素因数分解:

$2^8\times 3^3\times {\mathrm{13}}^1\times {\mathrm{7127}}^1$

素因数の和:7165

約数の個数: 144

約数和(自身を含む): 2039748480

約数和(自身を除く): 1399344768

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 32, 36, 39, 48, 52, 54, 64, 72, 78, 96, 104, 108, 117, 128, 144, 156, 192, 208, 216, 234, 256, 288, 312, 351, 384, 416, 432, 468, 576, 624, 702, 768, 832, 864, 936, 1152, 1248, 1404, 1664, 1728, 1872, 2304, 2496, 2808, 3328, 3456, 3744, 4992, 5616, 6912, 7127, 7488, 9984, 11232, 14254, 14976, 21381, 22464, 28508, 29952, 42762, 44928, 57016, 64143, 85524, 89856, 92651, 114032, 128286, 171048, 185302, 192429, 228064, 256572, 277953, 342096, 370604, 384858, 456128, 513144, 555906, 684192, 741208, 769716, 833859, 912256, 1026288, 1111812, 1368384, 1482416, 1539432, 1667718, 1824512, 2052576, 2223624, 2501577, 2736768, 2964832, 3078864, 3335436, 4105152, 4447248, 5003154, 5473536, 5929664, 6157728, 6670872, 8210304, 8894496, 10006308, 11859328, 12315456, 13341744, 16420608, 17788992, 20012616, 23718656, 24630912, 26683488, 35577984, 40025232, 49261824, 53366976, 71155968, 80050464, 106733952, 160100928, 213467904, 320201856, 640403712]

約数ペア:

[(1, 640403712), (2, 320201856), (3, 213467904), (4, 160100928), (6, 106733952), (8, 80050464), (9, 71155968), (12, 53366976), (13, 49261824), (16, 40025232), (18, 35577984), (24, 26683488), (26, 24630912), (27, 23718656), (32, 20012616), (36, 17788992), (39, 16420608), (48, 13341744), (52, 12315456), (54, 11859328), (64, 10006308), (72, 8894496), (78, 8210304), (96, 6670872), (104, 6157728), (108, 5929664), (117, 5473536), (128, 5003154), (144, 4447248), (156, 4105152), (192, 3335436), (208, 3078864), (216, 2964832), (234, 2736768), (256, 2501577), (288, 2223624), (312, 2052576), (351, 1824512), (384, 1667718), (416, 1539432), (432, 1482416), (468, 1368384), (576, 1111812), (624, 1026288), (702, 912256), (768, 833859), (832, 769716), (864, 741208), (936, 684192), (1152, 555906), (1248, 513144), (1404, 456128), (1664, 384858), (1728, 370604), (1872, 342096), (2304, 277953), (2496, 256572), (2808, 228064), (3328, 192429), (3456, 185302), (3744, 171048), (4992, 128286), (5616, 114032), (6912, 92651), (7127, 89856), (7488, 85524), (9984, 64143), (11232, 57016), (14254, 44928), (14976, 42762), (21381, 29952), (22464, 28508)]