81689165

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{18133}}^1$

素因数の和:18208

約数の個数: 16

約数和(自身を含む): 105757488

約数和(自身を除く): 24068323

約数列:

[1, 5, 17, 53, 85, 265, 901, 4505, 18133, 90665, 308261, 961049, 1541305, 4805245, 16337833, 81689165]

約数ペア:

[(1, 81689165), (5, 16337833), (17, 4805245), (53, 1541305), (85, 961049), (265, 308261), (901, 90665), (4505, 18133)]