1981863

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{1303}}^1$

素因数の和:1335

約数の個数: 18

約数和(自身を含む): 3102216

約数和(自身を除く): 1120353

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1303, 1521, 3909, 11727, 16939, 50817, 152451, 220207, 660621, 1981863]

約数ペア:

[(1, 1981863), (3, 660621), (9, 220207), (13, 152451), (39, 50817), (117, 16939), (169, 11727), (507, 3909), (1303, 1521)]