80921600

素因数分解:

$2^{10}\times 5^2\times {\mathrm{29}}^1\times {\mathrm{109}}^1$

素因数の和:168

約数の個数: 132

約数和(自身を含む): 209408100

約数和(自身を除く): 128486500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 32, 40, 50, 58, 64, 80, 100, 109, 116, 128, 145, 160, 200, 218, 232, 256, 290, 320, 400, 436, 464, 512, 545, 580, 640, 725, 800, 872, 928, 1024, 1090, 1160, 1280, 1450, 1600, 1744, 1856, 2180, 2320, 2560, 2725, 2900, 3161, 3200, 3488, 3712, 4360, 4640, 5120, 5450, 5800, 6322, 6400, 6976, 7424, 8720, 9280, 10900, 11600, 12644, 12800, 13952, 14848, 15805, 17440, 18560, 21800, 23200, 25288, 25600, 27904, 29696, 31610, 34880, 37120, 43600, 46400, 50576, 55808, 63220, 69760, 74240, 79025, 87200, 92800, 101152, 111616, 126440, 139520, 148480, 158050, 174400, 185600, 202304, 252880, 279040, 316100, 348800, 371200, 404608, 505760, 558080, 632200, 697600, 742400, 809216, 1011520, 1264400, 1395200, 1618432, 2023040, 2528800, 2790400, 3236864, 4046080, 5057600, 8092160, 10115200, 16184320, 20230400, 40460800, 80921600]

約数ペア:

[(1, 80921600), (2, 40460800), (4, 20230400), (5, 16184320), (8, 10115200), (10, 8092160), (16, 5057600), (20, 4046080), (25, 3236864), (29, 2790400), (32, 2528800), (40, 2023040), (50, 1618432), (58, 1395200), (64, 1264400), (80, 1011520), (100, 809216), (109, 742400), (116, 697600), (128, 632200), (145, 558080), (160, 505760), (200, 404608), (218, 371200), (232, 348800), (256, 316100), (290, 279040), (320, 252880), (400, 202304), (436, 185600), (464, 174400), (512, 158050), (545, 148480), (580, 139520), (640, 126440), (725, 111616), (800, 101152), (872, 92800), (928, 87200), (1024, 79025), (1090, 74240), (1160, 69760), (1280, 63220), (1450, 55808), (1600, 50576), (1744, 46400), (1856, 43600), (2180, 37120), (2320, 34880), (2560, 31610), (2725, 29696), (2900, 27904), (3161, 25600), (3200, 25288), (3488, 23200), (3712, 21800), (4360, 18560), (4640, 17440), (5120, 15805), (5450, 14848), (5800, 13952), (6322, 12800), (6400, 12644), (6976, 11600), (7424, 10900), (8720, 9280)]