209907440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{701}}^1$

素因数の和:930

約数の個数: 80

約数和(自身を含む): 517065120

約数和(自身を除く): 307157680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 197, 304, 380, 394, 701, 760, 788, 985, 1402, 1520, 1576, 1970, 2804, 3152, 3505, 3743, 3940, 5608, 7010, 7486, 7880, 11216, 13319, 14020, 14972, 15760, 18715, 26638, 28040, 29944, 37430, 53276, 56080, 59888, 66595, 74860, 106552, 133190, 138097, 149720, 213104, 266380, 276194, 299440, 532760, 552388, 690485, 1065520, 1104776, 1380970, 2209552, 2623843, 2761940, 5247686, 5523880, 10495372, 11047760, 13119215, 20990744, 26238430, 41981488, 52476860, 104953720, 209907440]

約数ペア:

[(1, 209907440), (2, 104953720), (4, 52476860), (5, 41981488), (8, 26238430), (10, 20990744), (16, 13119215), (19, 11047760), (20, 10495372), (38, 5523880), (40, 5247686), (76, 2761940), (80, 2623843), (95, 2209552), (152, 1380970), (190, 1104776), (197, 1065520), (304, 690485), (380, 552388), (394, 532760), (701, 299440), (760, 276194), (788, 266380), (985, 213104), (1402, 149720), (1520, 138097), (1576, 133190), (1970, 106552), (2804, 74860), (3152, 66595), (3505, 59888), (3743, 56080), (3940, 53276), (5608, 37430), (7010, 29944), (7486, 28040), (7880, 26638), (11216, 18715), (13319, 15760), (14020, 14972)]