20198020420

素因数分解:

$2^2\times 5^1\times {\mathrm{1009901021}}^1$

素因数の和:1009901030

約数の個数: 12

約数和(自身を含む): 42415842924

約数和(自身を除く): 22217822504

約数列:

[1, 2, 4, 5, 10, 20, 1009901021, 2019802042, 4039604084, 5049505105, 10099010210, 20198020420]

約数ペア:

[(1, 20198020420), (2, 10099010210), (4, 5049505105), (5, 4039604084), (10, 2019802042), (20, 1009901021)]