80800040

素因数分解:

$2^3\times 5^1\times {\mathrm{2020001}}^1$

素因数の和:2020012

約数の個数: 16

約数和(自身を含む): 181800180

約数和(自身を除く): 101000140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2020001, 4040002, 8080004, 10100005, 16160008, 20200010, 40400020, 80800040]

約数ペア:

[(1, 80800040), (2, 40400020), (4, 20200010), (5, 16160008), (8, 10100005), (10, 8080004), (20, 4040002), (40, 2020001)]