261686341

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{563}}^1\times {\mathrm{2887}}^1$

素因数の和:3480

約数の個数: 16

約数和(自身を含む): 312735744

約数和(自身を除く): 51049403

約数列:

[1, 7, 23, 161, 563, 2887, 3941, 12949, 20209, 66401, 90643, 464807, 1625381, 11377667, 37383763, 261686341]

約数ペア:

[(1, 261686341), (7, 37383763), (23, 11377667), (161, 1625381), (563, 464807), (2887, 90643), (3941, 66401), (12949, 20209)]