81630720

素因数分解:

$2^9\times 3^3\times 5^1\times {\mathrm{1181}}^1$

素因数の和:1213

約数の個数: 160

約数和(自身を含む): 290204640

約数和(自身を除く): 208573920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 256, 270, 288, 320, 360, 384, 432, 480, 512, 540, 576, 640, 720, 768, 864, 960, 1080, 1152, 1181, 1280, 1440, 1536, 1728, 1920, 2160, 2304, 2362, 2560, 2880, 3456, 3543, 3840, 4320, 4608, 4724, 5760, 5905, 6912, 7086, 7680, 8640, 9448, 10629, 11520, 11810, 13824, 14172, 17280, 17715, 18896, 21258, 23040, 23620, 28344, 31887, 34560, 35430, 37792, 42516, 47240, 53145, 56688, 63774, 69120, 70860, 75584, 85032, 94480, 106290, 113376, 127548, 141720, 151168, 159435, 170064, 188960, 212580, 226752, 255096, 283440, 302336, 318870, 340128, 377920, 425160, 453504, 510192, 566880, 604672, 637740, 680256, 755840, 850320, 907008, 1020384, 1133760, 1275480, 1360512, 1511680, 1700640, 1814016, 2040768, 2267520, 2550960, 2721024, 3023360, 3401280, 4081536, 4535040, 5101920, 5442048, 6802560, 8163072, 9070080, 10203840, 13605120, 16326144, 20407680, 27210240, 40815360, 81630720]

約数ペア:

[(1, 81630720), (2, 40815360), (3, 27210240), (4, 20407680), (5, 16326144), (6, 13605120), (8, 10203840), (9, 9070080), (10, 8163072), (12, 6802560), (15, 5442048), (16, 5101920), (18, 4535040), (20, 4081536), (24, 3401280), (27, 3023360), (30, 2721024), (32, 2550960), (36, 2267520), (40, 2040768), (45, 1814016), (48, 1700640), (54, 1511680), (60, 1360512), (64, 1275480), (72, 1133760), (80, 1020384), (90, 907008), (96, 850320), (108, 755840), (120, 680256), (128, 637740), (135, 604672), (144, 566880), (160, 510192), (180, 453504), (192, 425160), (216, 377920), (240, 340128), (256, 318870), (270, 302336), (288, 283440), (320, 255096), (360, 226752), (384, 212580), (432, 188960), (480, 170064), (512, 159435), (540, 151168), (576, 141720), (640, 127548), (720, 113376), (768, 106290), (864, 94480), (960, 85032), (1080, 75584), (1152, 70860), (1181, 69120), (1280, 63774), (1440, 56688), (1536, 53145), (1728, 47240), (1920, 42516), (2160, 37792), (2304, 35430), (2362, 34560), (2560, 31887), (2880, 28344), (3456, 23620), (3543, 23040), (3840, 21258), (4320, 18896), (4608, 17715), (4724, 17280), (5760, 14172), (5905, 13824), (6912, 11810), (7086, 11520), (7680, 10629), (8640, 9448)]