19864359

素因数分解:

$3^4\times {\mathrm{431}}^1\times {\mathrm{569}}^1$

素因数の和:1012

約数の個数: 20

約数和(自身を含む): 29795040

約数和(自身を除く): 9930681

約数列:

[1, 3, 9, 27, 81, 431, 569, 1293, 1707, 3879, 5121, 11637, 15363, 34911, 46089, 245239, 735717, 2207151, 6621453, 19864359]

約数ペア:

[(1, 19864359), (3, 6621453), (9, 2207151), (27, 735717), (81, 245239), (431, 46089), (569, 34911), (1293, 15363), (1707, 11637), (3879, 5121)]