20419209

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{3191}}^1$

素因数の和:3282

約数の個数: 20

約数和(自身を含む): 30898560

約数和(自身を除く): 10479351

約数列:

[1, 3, 9, 27, 79, 81, 237, 711, 2133, 3191, 6399, 9573, 28719, 86157, 252089, 258471, 756267, 2268801, 6806403, 20419209]

約数ペア:

[(1, 20419209), (3, 6806403), (9, 2268801), (27, 756267), (79, 258471), (81, 252089), (237, 86157), (711, 28719), (2133, 9573), (3191, 6399)]