21403359

素因数分解:

$3^4\times {\mathrm{139}}^1\times {\mathrm{1901}}^1$

素因数の和:2052

約数の個数: 20

約数和(自身を含む): 32219880

約数和(自身を除く): 10816521

約数列:

[1, 3, 9, 27, 81, 139, 417, 1251, 1901, 3753, 5703, 11259, 17109, 51327, 153981, 264239, 792717, 2378151, 7134453, 21403359]

約数ペア:

[(1, 21403359), (3, 7134453), (9, 2378151), (27, 792717), (81, 264239), (139, 153981), (417, 51327), (1251, 17109), (1901, 11259), (3753, 5703)]