4080080

素因数分解:

$2^4\times 5^1\times {\mathrm{51001}}^1$

素因数の和:51014

約数の個数: 20

約数和(自身を含む): 9486372

約数和(自身を除く): 5406292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 51001, 102002, 204004, 255005, 408008, 510010, 816016, 1020020, 2040040, 4080080]

約数ペア:

[(1, 4080080), (2, 2040040), (4, 1020020), (5, 816016), (8, 510010), (10, 408008), (16, 255005), (20, 204004), (40, 102002), (80, 51001)]