204020242780

素因数分解:

$2^2\times 5^1\times {\mathrm{10201012139}}^1$

素因数の和:10201012148

約数の個数: 12

約数和(自身を含む): 428442509880

約数和(自身を除く): 224422267100

約数列:

[1, 2, 4, 5, 10, 20, 10201012139, 20402024278, 40804048556, 51005060695, 102010121390, 204020242780]

約数ペア:

[(1, 204020242780), (2, 102010121390), (4, 51005060695), (5, 40804048556), (10, 20402024278), (20, 10201012139)]