2019990028

素因数分解:

$2^2\times 7^1\times {\mathrm{72142501}}^1$

素因数の和:72142512

約数の個数: 12

約数和(自身を含む): 4039980112

約数和(自身を除く): 2019990084

約数列:

[1, 2, 4, 7, 14, 28, 72142501, 144285002, 288570004, 504997507, 1009995014, 2019990028]

約数ペア:

[(1, 2019990028), (2, 1009995014), (4, 504997507), (7, 288570004), (14, 144285002), (28, 72142501)]