21258772

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{1571}}^1$

素因数の和:1791

約数の個数: 24

約数和(自身を含む): 39614400

約数和(自身を除く): 18355628

約数列:

[1, 2, 4, 17, 34, 68, 199, 398, 796, 1571, 3142, 3383, 6284, 6766, 13532, 26707, 53414, 106828, 312629, 625258, 1250516, 5314693, 10629386, 21258772]

約数ペア:

[(1, 21258772), (2, 10629386), (4, 5314693), (17, 1250516), (34, 625258), (68, 312629), (199, 106828), (398, 53414), (796, 26707), (1571, 13532), (3142, 6766), (3383, 6284)]