81405519

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{109859}}^1$

素因数の和:109894

約数の個数: 16

約数和(自身を含む): 123043200

約数和(自身を除く): 41637681

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 109859, 329577, 1428167, 2087321, 4284501, 6261963, 27135173, 81405519]

約数ペア:

[(1, 81405519), (3, 27135173), (13, 6261963), (19, 4284501), (39, 2087321), (57, 1428167), (247, 329577), (741, 109859)]