19979649

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{17209}}^1$

素因数の和:17261

約数の個数: 16

約数和(自身を含む): 30289600

約数和(自身を除く): 10309951

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 17209, 51627, 154881, 464643, 739987, 2219961, 6659883, 19979649]

約数ペア:

[(1, 19979649), (3, 6659883), (9, 2219961), (27, 739987), (43, 464643), (129, 154881), (387, 51627), (1161, 17209)]