21177928

素因数分解:

$2^3\times {\mathrm{1549}}^1\times {\mathrm{1709}}^1$

素因数の和:3264

約数の個数: 16

約数和(自身を含む): 39757500

約数和(自身を除く): 18579572

約数列:

[1, 2, 4, 8, 1549, 1709, 3098, 3418, 6196, 6836, 12392, 13672, 2647241, 5294482, 10588964, 21177928]

約数ペア:

[(1, 21177928), (2, 10588964), (4, 5294482), (8, 2647241), (1549, 13672), (1709, 12392), (3098, 6836), (3418, 6196)]