18573919

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{509}}^1$

素因数の和:930

約数の個数: 16

約数和(自身を含む): 22962240

約数和(自身を除く): 4388321

約数列:

[1, 7, 13, 91, 401, 509, 2807, 3563, 5213, 6617, 36491, 46319, 204109, 1428763, 2653417, 18573919]

約数ペア:

[(1, 18573919), (7, 2653417), (13, 1428763), (91, 204109), (401, 46319), (509, 36491), (2807, 6617), (3563, 5213)]