21195490

素因数分解:

$2^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{10651}}^1$

素因数の和:10857

約数の個数: 16

約数和(自身を含む): 38347200

約数和(自身を除く): 17151710

約数列:

[1, 2, 5, 10, 199, 398, 995, 1990, 10651, 21302, 53255, 106510, 2119549, 4239098, 10597745, 21195490]

約数ペア:

[(1, 21195490), (2, 10597745), (5, 4239098), (10, 2119549), (199, 106510), (398, 53255), (995, 21302), (1990, 10651)]