21291548

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{353}}^1\times {\mathrm{887}}^1$

素因数の和:1261

約数の個数: 24

約数和(自身を含む): 39608352

約数和(自身を除く): 18316804

約数列:

[1, 2, 4, 17, 34, 68, 353, 706, 887, 1412, 1774, 3548, 6001, 12002, 15079, 24004, 30158, 60316, 313111, 626222, 1252444, 5322887, 10645774, 21291548]

約数ペア:

[(1, 21291548), (2, 10645774), (4, 5322887), (17, 1252444), (34, 626222), (68, 313111), (353, 60316), (706, 30158), (887, 24004), (1412, 15079), (1774, 12002), (3548, 6001)]