18421389

素因数分解:

$3^2\times 7^1\times {\mathrm{269}}^1\times {\mathrm{1087}}^1$

素因数の和:1369

約数の個数: 24

約数和(自身を含む): 30551040

約数和(自身を除く): 12129651

約数列:

[1, 3, 7, 9, 21, 63, 269, 807, 1087, 1883, 2421, 3261, 5649, 7609, 9783, 16947, 22827, 68481, 292403, 877209, 2046821, 2631627, 6140463, 18421389]

約数ペア:

[(1, 18421389), (3, 6140463), (7, 2631627), (9, 2046821), (21, 877209), (63, 292403), (269, 68481), (807, 22827), (1087, 16947), (1883, 9783), (2421, 7609), (3261, 5649)]