20100398980

素因数分解:

$2^2\times 5^1\times {\mathrm{1005019949}}^1$

素因数の和:1005019958

約数の個数: 12

約数和(自身を含む): 42210837900

約数和(自身を除く): 22110438920

約数列:

[1, 2, 4, 5, 10, 20, 1005019949, 2010039898, 4020079796, 5025099745, 10050199490, 20100398980]

約数ペア:

[(1, 20100398980), (2, 10050199490), (4, 5025099745), (5, 4020079796), (10, 2010039898), (20, 1005019949)]