19404009

素因数分解:

$3^3\times {\mathrm{163}}^1\times {\mathrm{4409}}^1$

素因数の和:4581

約数の個数: 16

約数和(自身を含む): 28929600

約数和(自身を除く): 9525591

約数列:

[1, 3, 9, 27, 163, 489, 1467, 4401, 4409, 13227, 39681, 119043, 718667, 2156001, 6468003, 19404009]

約数ペア:

[(1, 19404009), (3, 6468003), (9, 2156001), (27, 718667), (163, 119043), (489, 39681), (1467, 13227), (4401, 4409)]