80439040

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:258

約数の個数: 144

約数和(自身を含む): 218544480

約数和(自身を除く): 138105440

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 32, 40, 44, 55, 58, 64, 80, 88, 110, 116, 128, 145, 160, 176, 197, 220, 232, 256, 290, 319, 320, 352, 394, 440, 464, 580, 638, 640, 704, 788, 880, 928, 985, 1160, 1276, 1280, 1408, 1576, 1595, 1760, 1856, 1970, 2167, 2320, 2552, 2816, 3152, 3190, 3520, 3712, 3940, 4334, 4640, 5104, 5713, 6304, 6380, 7040, 7424, 7880, 8668, 9280, 10208, 10835, 11426, 12608, 12760, 14080, 15760, 17336, 18560, 20416, 21670, 22852, 25216, 25520, 28565, 31520, 34672, 37120, 40832, 43340, 45704, 50432, 51040, 57130, 62843, 63040, 69344, 81664, 86680, 91408, 102080, 114260, 125686, 126080, 138688, 173360, 182816, 204160, 228520, 251372, 252160, 277376, 314215, 346720, 365632, 408320, 457040, 502744, 554752, 628430, 693440, 731264, 914080, 1005488, 1256860, 1386880, 1462528, 1828160, 2010976, 2513720, 2773760, 3656320, 4021952, 5027440, 7312640, 8043904, 10054880, 16087808, 20109760, 40219520, 80439040]

約数ペア:

[(1, 80439040), (2, 40219520), (4, 20109760), (5, 16087808), (8, 10054880), (10, 8043904), (11, 7312640), (16, 5027440), (20, 4021952), (22, 3656320), (29, 2773760), (32, 2513720), (40, 2010976), (44, 1828160), (55, 1462528), (58, 1386880), (64, 1256860), (80, 1005488), (88, 914080), (110, 731264), (116, 693440), (128, 628430), (145, 554752), (160, 502744), (176, 457040), (197, 408320), (220, 365632), (232, 346720), (256, 314215), (290, 277376), (319, 252160), (320, 251372), (352, 228520), (394, 204160), (440, 182816), (464, 173360), (580, 138688), (638, 126080), (640, 125686), (704, 114260), (788, 102080), (880, 91408), (928, 86680), (985, 81664), (1160, 69344), (1276, 63040), (1280, 62843), (1408, 57130), (1576, 51040), (1595, 50432), (1760, 45704), (1856, 43340), (1970, 40832), (2167, 37120), (2320, 34672), (2552, 31520), (2816, 28565), (3152, 25520), (3190, 25216), (3520, 22852), (3712, 21670), (3940, 20416), (4334, 18560), (4640, 17336), (5104, 15760), (5713, 14080), (6304, 12760), (6380, 12608), (7040, 11426), (7424, 10835), (7880, 10208), (8668, 9280)]