19988007

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{283}}^1\times {\mathrm{1811}}^1$

素因数の和:2110

約数の個数: 16

約数和(自身を含む): 28818048

約数和(自身を除く): 8830041

約数列:

[1, 3, 13, 39, 283, 849, 1811, 3679, 5433, 11037, 23543, 70629, 512513, 1537539, 6662669, 19988007]

約数ペア:

[(1, 19988007), (3, 6662669), (13, 1537539), (39, 512513), (283, 70629), (849, 23543), (1811, 11037), (3679, 5433)]