81529728

素因数分解:

$2^7\times 3^1\times 7^3\times {\mathrm{619}}^1$

素因数の和:657

約数の個数: 128

約数和(自身を含む): 252960000

約数和(自身を除く): 171430272

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 49, 56, 64, 84, 96, 98, 112, 128, 147, 168, 192, 196, 224, 294, 336, 343, 384, 392, 448, 588, 619, 672, 686, 784, 896, 1029, 1176, 1238, 1344, 1372, 1568, 1857, 2058, 2352, 2476, 2688, 2744, 3136, 3714, 4116, 4333, 4704, 4952, 5488, 6272, 7428, 8232, 8666, 9408, 9904, 10976, 12999, 14856, 16464, 17332, 18816, 19808, 21952, 25998, 29712, 30331, 32928, 34664, 39616, 43904, 51996, 59424, 60662, 65856, 69328, 79232, 90993, 103992, 118848, 121324, 131712, 138656, 181986, 207984, 212317, 237696, 242648, 277312, 363972, 415968, 424634, 485296, 554624, 636951, 727944, 831936, 849268, 970592, 1273902, 1455888, 1663872, 1698536, 1941184, 2547804, 2911776, 3397072, 3882368, 5095608, 5823552, 6794144, 10191216, 11647104, 13588288, 20382432, 27176576, 40764864, 81529728]

約数ペア:

[(1, 81529728), (2, 40764864), (3, 27176576), (4, 20382432), (6, 13588288), (7, 11647104), (8, 10191216), (12, 6794144), (14, 5823552), (16, 5095608), (21, 3882368), (24, 3397072), (28, 2911776), (32, 2547804), (42, 1941184), (48, 1698536), (49, 1663872), (56, 1455888), (64, 1273902), (84, 970592), (96, 849268), (98, 831936), (112, 727944), (128, 636951), (147, 554624), (168, 485296), (192, 424634), (196, 415968), (224, 363972), (294, 277312), (336, 242648), (343, 237696), (384, 212317), (392, 207984), (448, 181986), (588, 138656), (619, 131712), (672, 121324), (686, 118848), (784, 103992), (896, 90993), (1029, 79232), (1176, 69328), (1238, 65856), (1344, 60662), (1372, 59424), (1568, 51996), (1857, 43904), (2058, 39616), (2352, 34664), (2476, 32928), (2688, 30331), (2744, 29712), (3136, 25998), (3714, 21952), (4116, 19808), (4333, 18816), (4704, 17332), (4952, 16464), (5488, 14856), (6272, 12999), (7428, 10976), (8232, 9904), (8666, 9408)]