7971687

素因数分解:

$3^2\times {\mathrm{37}}^2\times {\mathrm{647}}^1$

素因数の和:727

約数の個数: 18

約数和(自身を含む): 11852568

約数和(自身を除く): 3880881

約数列:

[1, 3, 9, 37, 111, 333, 647, 1369, 1941, 4107, 5823, 12321, 23939, 71817, 215451, 885743, 2657229, 7971687]

約数ペア:

[(1, 7971687), (3, 2657229), (9, 885743), (37, 215451), (111, 71817), (333, 23939), (647, 12321), (1369, 5823), (1941, 4107)]