890222780

素因数分解:

$2^2\times 5^1\times {\mathrm{44511139}}^1$

素因数の和:44511148

約数の個数: 12

約数和(自身を含む): 1869467880

約数和(自身を除く): 979245100

約数列:

[1, 2, 4, 5, 10, 20, 44511139, 89022278, 178044556, 222555695, 445111390, 890222780]

約数ペア:

[(1, 890222780), (2, 445111390), (4, 222555695), (5, 178044556), (10, 89022278), (20, 44511139)]