81651910

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{199151}}^1$

素因数の和:199199

約数の個数: 16

約数和(自身を含む): 150558912

約数和(自身を除く): 68907002

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 199151, 398302, 995755, 1991510, 8165191, 16330382, 40825955, 81651910]

約数ペア:

[(1, 81651910), (2, 40825955), (5, 16330382), (10, 8165191), (41, 1991510), (82, 995755), (205, 398302), (410, 199151)]