201990512890

素因数分解:

$2^1\times 5^1\times {\mathrm{20199051289}}^1$

素因数の和:20199051296

約数の個数: 8

約数和(自身を含む): 363582923220

約数和(自身を除く): 161592410330

約数列:

[1, 2, 5, 10, 20199051289, 40398102578, 100995256445, 201990512890]

約数ペア:

[(1, 201990512890), (2, 100995256445), (5, 40398102578), (10, 20199051289)]