18164540

素因数分解:

$2^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{4001}}^1$

素因数の和:4237

約数の個数: 24

約数和(自身を含む): 38323152

約数和(自身を除く): 20158612

約数列:

[1, 2, 4, 5, 10, 20, 227, 454, 908, 1135, 2270, 4001, 4540, 8002, 16004, 20005, 40010, 80020, 908227, 1816454, 3632908, 4541135, 9082270, 18164540]

約数ペア:

[(1, 18164540), (2, 9082270), (4, 4541135), (5, 3632908), (10, 1816454), (20, 908227), (227, 80020), (454, 40010), (908, 20005), (1135, 16004), (2270, 8002), (4001, 4540)]