81686283

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{12923}}^1$

素因数の和:12983

約数の個数: 24

約数和(自身を含む): 129653568

約数和(自身を除く): 47967285

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 6321, 12923, 38769, 90461, 271383, 555689, 633227, 1667067, 1899681, 3889823, 11669469, 27228761, 81686283]

約数ペア:

[(1, 81686283), (3, 27228761), (7, 11669469), (21, 3889823), (43, 1899681), (49, 1667067), (129, 633227), (147, 555689), (301, 271383), (903, 90461), (2107, 38769), (6321, 12923)]