800200

素因数分解:

$2^3\times 5^2\times {\mathrm{4001}}^1$

素因数の和:4017

約数の個数: 24

約数和(自身を含む): 1860930

約数和(自身を除く): 1060730

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 4001, 8002, 16004, 20005, 32008, 40010, 80020, 100025, 160040, 200050, 400100, 800200]

約数ペア:

[(1, 800200), (2, 400100), (4, 200050), (5, 160040), (8, 100025), (10, 80020), (20, 40010), (25, 32008), (40, 20005), (50, 16004), (100, 8002), (200, 4001)]