28145274836

素因数分解:

$2^2\times 7^2\times {\mathrm{181}}^1\times {\mathrm{311}}^1\times {\mathrm{2551}}^1$

素因数の和:3061

約数の個数: 72

約数和(自身を含む): 57820194432

約数和(自身を除く): 29674919596

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 181, 196, 311, 362, 622, 724, 1244, 1267, 2177, 2534, 2551, 4354, 5068, 5102, 8708, 8869, 10204, 15239, 17738, 17857, 30478, 35476, 35714, 56291, 60956, 71428, 112582, 124999, 225164, 249998, 394037, 461731, 499996, 788074, 793361, 923462, 1576148, 1586722, 1846924, 2758259, 3173444, 3232117, 5516518, 5553527, 6464234, 11033036, 11107054, 12928468, 22214108, 22624819, 38874689, 45249638, 77749378, 90499276, 143598341, 155498756, 287196682, 574393364, 1005188387, 2010376774, 4020753548, 7036318709, 14072637418, 28145274836]

約数ペア:

[(1, 28145274836), (2, 14072637418), (4, 7036318709), (7, 4020753548), (14, 2010376774), (28, 1005188387), (49, 574393364), (98, 287196682), (181, 155498756), (196, 143598341), (311, 90499276), (362, 77749378), (622, 45249638), (724, 38874689), (1244, 22624819), (1267, 22214108), (2177, 12928468), (2534, 11107054), (2551, 11033036), (4354, 6464234), (5068, 5553527), (5102, 5516518), (8708, 3232117), (8869, 3173444), (10204, 2758259), (15239, 1846924), (17738, 1586722), (17857, 1576148), (30478, 923462), (35476, 793361), (35714, 788074), (56291, 499996), (60956, 461731), (71428, 394037), (112582, 249998), (124999, 225164)]