81480320

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7489}}^1$

素因数の和:7525

約数の個数: 64

約数和(自身を含む): 206274600

約数和(自身を除く): 124794280

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 272, 320, 340, 544, 640, 680, 1088, 1360, 2176, 2720, 5440, 7489, 10880, 14978, 29956, 37445, 59912, 74890, 119824, 127313, 149780, 239648, 254626, 299560, 479296, 509252, 599120, 636565, 958592, 1018504, 1198240, 1273130, 2037008, 2396480, 2546260, 4074016, 4792960, 5092520, 8148032, 10185040, 16296064, 20370080, 40740160, 81480320]

約数ペア:

[(1, 81480320), (2, 40740160), (4, 20370080), (5, 16296064), (8, 10185040), (10, 8148032), (16, 5092520), (17, 4792960), (20, 4074016), (32, 2546260), (34, 2396480), (40, 2037008), (64, 1273130), (68, 1198240), (80, 1018504), (85, 958592), (128, 636565), (136, 599120), (160, 509252), (170, 479296), (272, 299560), (320, 254626), (340, 239648), (544, 149780), (640, 127313), (680, 119824), (1088, 74890), (1360, 59912), (2176, 37445), (2720, 29956), (5440, 14978), (7489, 10880)]