19851663

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{521}}^1\times {\mathrm{977}}^1$

素因数の和:1514

約数の個数: 16

約数和(自身を含む): 28588896

約数和(自身を除く): 8737233

約数列:

[1, 3, 13, 39, 521, 977, 1563, 2931, 6773, 12701, 20319, 38103, 509017, 1527051, 6617221, 19851663]

約数ペア:

[(1, 19851663), (3, 6617221), (13, 1527051), (39, 509017), (521, 38103), (977, 20319), (1563, 12701), (2931, 6773)]