20199870881

素因数分解:

${\mathrm{19}}^2\times {\mathrm{137}}^1\times {\mathrm{408433}}^1$

素因数の和:408608

約数の個数: 12

約数和(自身を含む): 21474642852

約数和(自身を除く): 1274771971

約数列:

[1, 19, 137, 361, 2603, 49457, 408433, 7760227, 55955321, 147444313, 1063151099, 20199870881]

約数ペア:

[(1, 20199870881), (19, 1063151099), (137, 147444313), (361, 55955321), (2603, 7760227), (49457, 408433)]