21082986

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{27239}}^1$

素因数の和:27290

約数の個数: 24

約数和(自身を含む): 46743840

約数和(自身を除く): 25660854

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 129, 258, 387, 774, 27239, 54478, 81717, 163434, 245151, 490302, 1171277, 2342554, 3513831, 7027662, 10541493, 21082986]

約数ペア:

[(1, 21082986), (2, 10541493), (3, 7027662), (6, 3513831), (9, 2342554), (18, 1171277), (43, 490302), (86, 245151), (129, 163434), (258, 81717), (387, 54478), (774, 27239)]