21282453

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{233}}^1$

素因数の和:458

約数の個数: 32

約数和(自身を含む): 33696000

約数和(自身を除く): 12413547

約数列:

[1, 3, 9, 17, 27, 51, 153, 199, 233, 459, 597, 699, 1791, 2097, 3383, 3961, 5373, 6291, 10149, 11883, 30447, 35649, 46367, 91341, 106947, 139101, 417303, 788239, 1251909, 2364717, 7094151, 21282453]

約数ペア:

[(1, 21282453), (3, 7094151), (9, 2364717), (17, 1251909), (27, 788239), (51, 417303), (153, 139101), (199, 106947), (233, 91341), (459, 46367), (597, 35649), (699, 30447), (1791, 11883), (2097, 10149), (3383, 6291), (3961, 5373)]