20643519

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{2143}}^1$

素因数の和:2191

約数の個数: 24

約数和(自身を含む): 31388160

約数和(自身を除く): 10744641

約数列:

[1, 3, 13, 19, 39, 57, 169, 247, 507, 741, 2143, 3211, 6429, 9633, 27859, 40717, 83577, 122151, 362167, 529321, 1086501, 1587963, 6881173, 20643519]

約数ペア:

[(1, 20643519), (3, 6881173), (13, 1587963), (19, 1086501), (39, 529321), (57, 362167), (169, 122151), (247, 83577), (507, 40717), (741, 27859), (2143, 9633), (3211, 6429)]