489888891

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{262957}}^1$

素因数の和:262992

約数の個数: 20

約数和(自身を含む): 763630032

約数和(自身を除く): 273741141

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 262957, 788871, 2366613, 6048011, 7099839, 18144033, 21299517, 54432099, 163296297, 489888891]

約数ペア:

[(1, 489888891), (3, 163296297), (9, 54432099), (23, 21299517), (27, 18144033), (69, 7099839), (81, 6048011), (207, 2366613), (621, 788871), (1863, 262957)]