2021375

素因数分解:

$5^3\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:275

約数の個数: 16

約数和(自身を含む): 2563392

約数和(自身を除く): 542017

約数列:

[1, 5, 25, 103, 125, 157, 515, 785, 2575, 3925, 12875, 16171, 19625, 80855, 404275, 2021375]

約数ペア:

[(1, 2021375), (5, 404275), (25, 80855), (103, 19625), (125, 16171), (157, 12875), (515, 3925), (785, 2575)]