1997001

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{1999}}^1$

素因数の和:2045

約数の個数: 16

約数和(自身を含む): 3040000

約数和(自身を除く): 1042999

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 1999, 5997, 17991, 53973, 73963, 221889, 665667, 1997001]

約数ペア:

[(1, 1997001), (3, 665667), (9, 221889), (27, 73963), (37, 53973), (111, 17991), (333, 5997), (999, 1999)]