989899090

素因数分解:

$2^1\times 5^1\times {\mathrm{9041}}^1\times {\mathrm{10949}}^1$

素因数の和:19997

約数の個数: 16

約数和(自身を含む): 1782178200

約数和(自身を除く): 792279110

約数列:

[1, 2, 5, 10, 9041, 10949, 18082, 21898, 45205, 54745, 90410, 109490, 98989909, 197979818, 494949545, 989899090]

約数ペア:

[(1, 989899090), (2, 494949545), (5, 197979818), (10, 98989909), (9041, 109490), (10949, 90410), (18082, 54745), (21898, 45205)]