19980994

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{4001}}^1$

素因数の和:4241

約数の個数: 16

約数和(自身を含む): 32848416

約数和(自身を除く): 12867422

約数列:

[1, 2, 11, 22, 227, 454, 2497, 4001, 4994, 8002, 44011, 88022, 908227, 1816454, 9990497, 19980994]

約数ペア:

[(1, 19980994), (2, 9990497), (11, 1816454), (22, 908227), (227, 88022), (454, 44011), (2497, 8002), (4001, 4994)]