81902405

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{17747}}^1$

素因数の和:17836

約数の個数: 16

約数和(自身を含む): 107339904

約数和(自身を除く): 25437499

約数列:

[1, 5, 13, 65, 71, 355, 923, 4615, 17747, 88735, 230711, 1153555, 1260037, 6300185, 16380481, 81902405]

約数ペア:

[(1, 81902405), (5, 16380481), (13, 6300185), (65, 1260037), (71, 1153555), (355, 230711), (923, 88735), (4615, 17747)]