1980050

素因数分解:

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

素因数の和:410

約数の個数: 18

約数和(自身を含む): 3701493

約数和(自身を除く): 1721443

約数列:

[1, 2, 5, 10, 25, 50, 199, 398, 995, 1990, 4975, 9950, 39601, 79202, 198005, 396010, 990025, 1980050]

約数ペア:

[(1, 1980050), (2, 990025), (5, 396010), (10, 198005), (25, 79202), (50, 39601), (199, 9950), (398, 4975), (995, 1990)]