20807049

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{1217}}^1$

素因数の和:1400

約数の個数: 16

約数和(自身を含む): 28647360

約数和(自身を除く): 7840311

約数列:

[1, 3, 41, 123, 139, 417, 1217, 3651, 5699, 17097, 49897, 149691, 169163, 507489, 6935683, 20807049]

約数ペア:

[(1, 20807049), (3, 6935683), (41, 507489), (123, 169163), (139, 149691), (417, 49897), (1217, 17097), (3651, 5699)]