77989120

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{191}}^1$

素因数の和:252

約数の個数: 144

約数和(自身を含む): 211921920

約数和(自身を除く): 133932800

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, 191, 220, 232, 256, 290, 319, 320, 352, 382, 440, 464, 580, 638, 640, 704, 764, 880, 928, 955, 1160, 1276, 1280, 1408, 1528, 1595, 1760, 1856, 1910, 2101, 2320, 2552, 2816, 3056, 3190, 3520, 3712, 3820, 4202, 4640, 5104, 5539, 6112, 6380, 7040, 7424, 7640, 8404, 9280, 10208, 10505, 11078, 12224, 12760, 14080, 15280, 16808, 18560, 20416, 21010, 22156, 24448, 25520, 27695, 30560, 33616, 37120, 40832, 42020, 44312, 48896, 51040, 55390, 60929, 61120, 67232, 81664, 84040, 88624, 102080, 110780, 121858, 122240, 134464, 168080, 177248, 204160, 221560, 243716, 244480, 268928, 304645, 336160, 354496, 408320, 443120, 487432, 537856, 609290, 672320, 708992, 886240, 974864, 1218580, 1344640, 1417984, 1772480, 1949728, 2437160, 2689280, 3544960, 3899456, 4874320, 7089920, 7798912, 9748640, 15597824, 19497280, 38994560, 77989120]

約数ペア:

[(1, 77989120), (2, 38994560), (4, 19497280), (5, 15597824), (8, 9748640), (10, 7798912), (11, 7089920), (16, 4874320), (20, 3899456), (22, 3544960), (29, 2689280), (32, 2437160), (40, 1949728), (44, 1772480), (55, 1417984), (58, 1344640), (64, 1218580), (80, 974864), (88, 886240), (110, 708992), (116, 672320), (128, 609290), (145, 537856), (160, 487432), (176, 443120), (191, 408320), (220, 354496), (232, 336160), (256, 304645), (290, 268928), (319, 244480), (320, 243716), (352, 221560), (382, 204160), (440, 177248), (464, 168080), (580, 134464), (638, 122240), (640, 121858), (704, 110780), (764, 102080), (880, 88624), (928, 84040), (955, 81664), (1160, 67232), (1276, 61120), (1280, 60929), (1408, 55390), (1528, 51040), (1595, 48896), (1760, 44312), (1856, 42020), (1910, 40832), (2101, 37120), (2320, 33616), (2552, 30560), (2816, 27695), (3056, 25520), (3190, 24448), (3520, 22156), (3712, 21010), (3820, 20416), (4202, 18560), (4640, 16808), (5104, 15280), (5539, 14080), (6112, 12760), (6380, 12224), (7040, 11078), (7424, 10505), (7640, 10208), (8404, 9280)]