21229718

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{1301}}^1$

素因数の和:1543

約数の個数: 16

約数和(自身を含む): 32810400

約数和(自身を除く): 11580682

約数列:

[1, 2, 41, 82, 199, 398, 1301, 2602, 8159, 16318, 53341, 106682, 258899, 517798, 10614859, 21229718]

約数ペア:

[(1, 21229718), (2, 10614859), (41, 517798), (82, 258899), (199, 106682), (398, 53341), (1301, 16318), (2602, 8159)]