21456584

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{157769}}^1$

素因数の和:157792

約数の個数: 16

約数和(自身を含む): 42597900

約数和(自身を除く): 21141316

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 157769, 315538, 631076, 1262152, 2682073, 5364146, 10728292, 21456584]

約数ペア:

[(1, 21456584), (2, 10728292), (4, 5364146), (8, 2682073), (17, 1262152), (34, 631076), (68, 315538), (136, 157769)]