71918080

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2161}}^1$

素因数の和:2197

約数の個数: 80

約数和(自身を含む): 185784984

約数和(自身を除く): 113866904

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 640, 832, 1040, 1280, 1664, 2080, 2161, 2560, 3328, 4160, 4322, 6656, 8320, 8644, 10805, 16640, 17288, 21610, 28093, 33280, 34576, 43220, 56186, 69152, 86440, 112372, 138304, 140465, 172880, 224744, 276608, 280930, 345760, 449488, 553216, 561860, 691520, 898976, 1106432, 1123720, 1383040, 1797952, 2247440, 2766080, 3595904, 4494880, 5532160, 7191808, 8989760, 14383616, 17979520, 35959040, 71918080]

約数ペア:

[(1, 71918080), (2, 35959040), (4, 17979520), (5, 14383616), (8, 8989760), (10, 7191808), (13, 5532160), (16, 4494880), (20, 3595904), (26, 2766080), (32, 2247440), (40, 1797952), (52, 1383040), (64, 1123720), (65, 1106432), (80, 898976), (104, 691520), (128, 561860), (130, 553216), (160, 449488), (208, 345760), (256, 280930), (260, 276608), (320, 224744), (416, 172880), (512, 140465), (520, 138304), (640, 112372), (832, 86440), (1040, 69152), (1280, 56186), (1664, 43220), (2080, 34576), (2161, 33280), (2560, 28093), (3328, 21610), (4160, 17288), (4322, 16640), (6656, 10805), (8320, 8644)]