3999919

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1$

素因数の和:247

約数の個数: 24

約数和(自身を含む): 5228496

約数和(自身を除く): 1228577

約数列:

[1, 7, 11, 41, 49, 77, 181, 287, 451, 539, 1267, 1991, 2009, 3157, 7421, 8869, 13937, 22099, 51947, 81631, 97559, 363629, 571417, 3999919]

約数ペア:

[(1, 3999919), (7, 571417), (11, 363629), (41, 97559), (49, 81631), (77, 51947), (181, 22099), (287, 13937), (451, 8869), (539, 7421), (1267, 3157), (1991, 2009)]