20390049

素因数分解:

$3^4\times {\mathrm{139}}^1\times {\mathrm{1811}}^1$

素因数の和:1962

約数の個数: 20

約数和(自身を含む): 30695280

約数和(自身を除く): 10305231

約数列:

[1, 3, 9, 27, 81, 139, 417, 1251, 1811, 3753, 5433, 11259, 16299, 48897, 146691, 251729, 755187, 2265561, 6796683, 20390049]

約数ペア:

[(1, 20390049), (3, 6796683), (9, 2265561), (27, 755187), (81, 251729), (139, 146691), (417, 48897), (1251, 16299), (1811, 11259), (3753, 5433)]