19954924

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 39916800

約数和(自身を除く): 19961876

約数列:

[1, 2, 4, 11, 22, 43, 44, 53, 86, 106, 172, 199, 212, 398, 473, 583, 796, 946, 1166, 1892, 2189, 2279, 2332, 4378, 4558, 8557, 8756, 9116, 10547, 17114, 21094, 25069, 34228, 42188, 50138, 94127, 100276, 116017, 188254, 232034, 376508, 453521, 464068, 907042, 1814084, 4988731, 9977462, 19954924]

約数ペア:

[(1, 19954924), (2, 9977462), (4, 4988731), (11, 1814084), (22, 907042), (43, 464068), (44, 453521), (53, 376508), (86, 232034), (106, 188254), (172, 116017), (199, 100276), (212, 94127), (398, 50138), (473, 42188), (583, 34228), (796, 25069), (946, 21094), (1166, 17114), (1892, 10547), (2189, 9116), (2279, 8756), (2332, 8557), (4378, 4558)]