18973257

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1\times {\mathrm{521}}^1$

素因数の和:784

約数の個数: 16

約数和(自身を含む): 25891200

約数和(自身を除く): 6917943

約数列:

[1, 3, 61, 183, 199, 521, 597, 1563, 12139, 31781, 36417, 95343, 103679, 311037, 6324419, 18973257]

約数ペア:

[(1, 18973257), (3, 6324419), (61, 311037), (183, 103679), (199, 95343), (521, 36417), (597, 31781), (1563, 12139)]