20662317

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{43}}^1$

素因数の和:139

約数の個数: 48

約数和(自身を含む): 34668480

約数和(自身を除く): 14006163

約数列:

[1, 3, 9, 13, 27, 37, 39, 43, 111, 117, 129, 333, 351, 387, 481, 559, 999, 1161, 1369, 1443, 1591, 1677, 4107, 4329, 4773, 5031, 12321, 12987, 14319, 15093, 17797, 20683, 36963, 42957, 53391, 58867, 62049, 160173, 176601, 186147, 480519, 529803, 558441, 765271, 1589409, 2295813, 6887439, 20662317]

約数ペア:

[(1, 20662317), (3, 6887439), (9, 2295813), (13, 1589409), (27, 765271), (37, 558441), (39, 529803), (43, 480519), (111, 186147), (117, 176601), (129, 160173), (333, 62049), (351, 58867), (387, 53391), (481, 42957), (559, 36963), (999, 20683), (1161, 17797), (1369, 15093), (1443, 14319), (1591, 12987), (1677, 12321), (4107, 5031), (4329, 4773)]