20887440

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12433}}^1$

素因数の和:12456

約数の個数: 80

約数和(自身を含む): 74007168

約数和(自身を除く): 53119728

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12433, 24866, 37299, 49732, 62165, 74598, 87031, 99464, 124330, 149196, 174062, 186495, 198928, 248660, 261093, 298392, 348124, 372990, 435155, 497320, 522186, 596784, 696248, 745980, 870310, 994640, 1044372, 1305465, 1392496, 1491960, 1740620, 2088744, 2610930, 2983920, 3481240, 4177488, 5221860, 6962480, 10443720, 20887440]

約数ペア:

[(1, 20887440), (2, 10443720), (3, 6962480), (4, 5221860), (5, 4177488), (6, 3481240), (7, 2983920), (8, 2610930), (10, 2088744), (12, 1740620), (14, 1491960), (15, 1392496), (16, 1305465), (20, 1044372), (21, 994640), (24, 870310), (28, 745980), (30, 696248), (35, 596784), (40, 522186), (42, 497320), (48, 435155), (56, 372990), (60, 348124), (70, 298392), (80, 261093), (84, 248660), (105, 198928), (112, 186495), (120, 174062), (140, 149196), (168, 124330), (210, 99464), (240, 87031), (280, 74598), (336, 62165), (420, 49732), (560, 37299), (840, 24866), (1680, 12433)]