21561543819

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{179981}}^1$

素因数の和:180042

約数の個数: 48

約数和(自身を含む): 35377261920

約数和(自身を除く): 13815718101

約数列:

[1, 3, 9, 17, 27, 29, 51, 81, 87, 153, 243, 261, 459, 493, 783, 1377, 1479, 2349, 4131, 4437, 7047, 13311, 39933, 119799, 179981, 539943, 1619829, 3059677, 4859487, 5219449, 9179031, 14578461, 15658347, 27537093, 43735383, 46975041, 82611279, 88730633, 140925123, 247833837, 266191899, 422775369, 743501511, 798575697, 1268326107, 2395727091, 7187181273, 21561543819]

約数ペア:

[(1, 21561543819), (3, 7187181273), (9, 2395727091), (17, 1268326107), (27, 798575697), (29, 743501511), (51, 422775369), (81, 266191899), (87, 247833837), (153, 140925123), (243, 88730633), (261, 82611279), (459, 46975041), (493, 43735383), (783, 27537093), (1377, 15658347), (1479, 14578461), (2349, 9179031), (4131, 5219449), (4437, 4859487), (7047, 3059677), (13311, 1619829), (39933, 539943), (119799, 179981)]