13278727

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{331}}^1\times {\mathrm{521}}^1$

素因数の和:870

約数の個数: 16

約数和(自身を含む): 16637184

約数和(自身を除く): 3358457

約数列:

[1, 7, 11, 77, 331, 521, 2317, 3641, 3647, 5731, 25487, 40117, 172451, 1207157, 1896961, 13278727]

約数ペア:

[(1, 13278727), (7, 1896961), (11, 1207157), (77, 172451), (331, 40117), (521, 25487), (2317, 5731), (3641, 3647)]