890450180

素因数分解:

$2^2\times 5^1\times {\mathrm{44522509}}^1$

素因数の和:44522518

約数の個数: 12

約数和(自身を含む): 1869945420

約数和(自身を除く): 979495240

約数列:

[1, 2, 4, 5, 10, 20, 44522509, 89045018, 178090036, 222612545, 445225090, 890450180]

約数ペア:

[(1, 890450180), (2, 445225090), (4, 222612545), (5, 178090036), (10, 89045018), (20, 44522509)]