1978821

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{1301}}^1$

素因数の和:1333

約数の個数: 18

約数和(自身を含む): 3097458

約数和(自身を除く): 1118637

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1301, 1521, 3903, 11709, 16913, 50739, 152217, 219869, 659607, 1978821]

約数ペア:

[(1, 1978821), (3, 659607), (9, 219869), (13, 152217), (39, 50739), (117, 16913), (169, 11709), (507, 3903), (1301, 1521)]