20689278

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{80191}}^1$

素因数の和:80239

約数の個数: 16

約数和(自身を含む): 42341376

約数和(自身を除く): 21652098

約数列:

[1, 2, 3, 6, 43, 86, 129, 258, 80191, 160382, 240573, 481146, 3448213, 6896426, 10344639, 20689278]

約数ペア:

[(1, 20689278), (2, 10344639), (3, 6896426), (6, 3448213), (43, 481146), (86, 240573), (129, 160382), (258, 80191)]