208781507

素因数分解:

${\mathrm{11}}^2\times {\mathrm{971}}^1\times {\mathrm{1777}}^1$

素因数の和:2770

約数の個数: 12

約数和(自身を含む): 229852728

約数和(自身を除く): 21071221

約数列:

[1, 11, 121, 971, 1777, 10681, 19547, 117491, 215017, 1725467, 18980137, 208781507]

約数ペア:

[(1, 208781507), (11, 18980137), (121, 1725467), (971, 215017), (1777, 117491), (10681, 19547)]