20555181

素因数分解:

$3^3\times {\mathrm{139}}^1\times {\mathrm{5477}}^1$

素因数の和:5625

約数の個数: 16

約数和(自身を含む): 30676800

約数和(自身を除く): 10121619

約数列:

[1, 3, 9, 27, 139, 417, 1251, 3753, 5477, 16431, 49293, 147879, 761303, 2283909, 6851727, 20555181]

約数ペア:

[(1, 20555181), (3, 6851727), (9, 2283909), (27, 761303), (139, 147879), (417, 49293), (1251, 16431), (3753, 5477)]