80991010

素因数分解:

$2^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{40699}}^1$

素因数の和:40905

約数の個数: 16

約数和(自身を含む): 146520000

約数和(自身を除く): 65528990

約数列:

[1, 2, 5, 10, 199, 398, 995, 1990, 40699, 81398, 203495, 406990, 8099101, 16198202, 40495505, 80991010]

約数ペア:

[(1, 80991010), (2, 40495505), (5, 16198202), (10, 8099101), (199, 406990), (398, 203495), (995, 81398), (1990, 40699)]