1978916401

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{333769}}^1$

素因数の和:333805

約数の個数: 18

約数和(自身を含む): 2530310370

約数和(自身を除く): 551393969

約数列:

[1, 7, 11, 49, 77, 121, 539, 847, 5929, 333769, 2336383, 3671459, 16354681, 25700213, 40386049, 179901491, 282702343, 1978916401]

約数ペア:

[(1, 1978916401), (7, 282702343), (11, 179901491), (49, 40386049), (77, 25700213), (121, 16354681), (539, 3671459), (847, 2336383), (5929, 333769)]