128890489

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{19949}}^1$

素因数の和:20040

約数の個数: 16

約数和(自身を含む): 160876800

約数和(自身を除く): 31986311

約数列:

[1, 7, 13, 71, 91, 497, 923, 6461, 19949, 139643, 259337, 1416379, 1815359, 9914653, 18412927, 128890489]

約数ペア:

[(1, 128890489), (7, 18412927), (13, 9914653), (71, 1815359), (91, 1416379), (497, 259337), (923, 139643), (6461, 19949)]