18887449

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{479}}^1$

素因数の和:660

約数の個数: 16

約数和(自身を含む): 22302720

約数和(自身を除く): 3415271

約数列:

[1, 7, 43, 131, 301, 479, 917, 3353, 5633, 20597, 39431, 62749, 144179, 439243, 2698207, 18887449]

約数ペア:

[(1, 18887449), (7, 2698207), (43, 439243), (131, 144179), (301, 62749), (479, 39431), (917, 20597), (3353, 5633)]