81865217

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{3457}}^1$

素因数の和:3680

約数の個数: 16

約数和(自身を含む): 99590400

約数和(自身を除く): 17725183

約数列:

[1, 7, 17, 119, 199, 1393, 3383, 3457, 23681, 24199, 58769, 411383, 687943, 4815601, 11695031, 81865217]

約数ペア:

[(1, 81865217), (7, 11695031), (17, 4815601), (119, 687943), (199, 411383), (1393, 58769), (3383, 24199), (3457, 23681)]