1999098980

素因数分解:

$2^2\times 5^1\times {\mathrm{99954949}}^1$

素因数の和:99954958

約数の個数: 12

約数和(自身を含む): 4198107900

約数和(自身を除く): 2199008920

約数列:

[1, 2, 4, 5, 10, 20, 99954949, 199909898, 399819796, 499774745, 999549490, 1999098980]

約数ペア:

[(1, 1999098980), (2, 999549490), (4, 499774745), (5, 399819796), (10, 199909898), (20, 99954949)]