39978261

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{5437}}^1$

素因数の和:5505

約数の個数: 24

約数和(自身を含む): 62210720

約数和(自身を除く): 22232459

約数列:

[1, 3, 9, 19, 43, 57, 129, 171, 387, 817, 2451, 5437, 7353, 16311, 48933, 103303, 233791, 309909, 701373, 929727, 2104119, 4442029, 13326087, 39978261]

約数ペア:

[(1, 39978261), (3, 13326087), (9, 4442029), (19, 2104119), (43, 929727), (57, 701373), (129, 309909), (171, 233791), (387, 103303), (817, 48933), (2451, 16311), (5437, 7353)]