21878228

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{311}}^1\times {\mathrm{409}}^1$

素因数の和:767

約数の個数: 24

約数和(自身を含む): 39399360

約数和(自身を除く): 17521132

約数列:

[1, 2, 4, 43, 86, 172, 311, 409, 622, 818, 1244, 1636, 13373, 17587, 26746, 35174, 53492, 70348, 127199, 254398, 508796, 5469557, 10939114, 21878228]

約数ペア:

[(1, 21878228), (2, 10939114), (4, 5469557), (43, 508796), (86, 254398), (172, 127199), (311, 70348), (409, 53492), (622, 35174), (818, 26746), (1244, 17587), (1636, 13373)]