2018990

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1999}}^1$

素因数の和:2107

約数の個数: 16

約数和(自身を含む): 3672000

約数和(自身を除く): 1653010

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 1999, 3998, 9995, 19990, 201899, 403798, 1009495, 2018990]

約数ペア:

[(1, 2018990), (2, 1009495), (5, 403798), (10, 201899), (101, 19990), (202, 9995), (505, 3998), (1010, 1999)]