1621251

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{499}}^1$

素因数の和:543

約数の個数: 18

約数和(自身を含む): 2476500

約数和(自身を除く): 855249

約数列:

[1, 3, 9, 19, 57, 171, 361, 499, 1083, 1497, 3249, 4491, 9481, 28443, 85329, 180139, 540417, 1621251]

約数ペア:

[(1, 1621251), (3, 540417), (9, 180139), (19, 85329), (57, 28443), (171, 9481), (361, 4491), (499, 3249), (1083, 1497)]