2905201820

素因数分解:

$2^2\times 5^1\times {\mathrm{145260091}}^1$

素因数の和:145260100

約数の個数: 12

約数和(自身を含む): 6100923864

約数和(自身を除く): 3195722044

約数列:

[1, 2, 4, 5, 10, 20, 145260091, 290520182, 581040364, 726300455, 1452600910, 2905201820]

約数ペア:

[(1, 2905201820), (2, 1452600910), (4, 726300455), (5, 581040364), (10, 290520182), (20, 145260091)]