20655687

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{131}}^1\times {\mathrm{311}}^1$

素因数の和:471

約数の個数: 24

約数和(自身を含む): 30146688

約数和(自身を除く): 9491001

約数列:

[1, 3, 13, 39, 131, 169, 311, 393, 507, 933, 1703, 4043, 5109, 12129, 22139, 40741, 52559, 66417, 122223, 157677, 529633, 1588899, 6885229, 20655687]

約数ペア:

[(1, 20655687), (3, 6885229), (13, 1588899), (39, 529633), (131, 157677), (169, 122223), (311, 66417), (393, 52559), (507, 40741), (933, 22139), (1703, 12129), (4043, 5109)]