19919263

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{3083}}^1$

素因数の和:3174

約数の個数: 16

約数和(自身を含む): 24869376

約数和(自身を除く): 4950113

約数列:

[1, 7, 13, 71, 91, 497, 923, 3083, 6461, 21581, 40079, 218893, 280553, 1532251, 2845609, 19919263]

約数ペア:

[(1, 19919263), (7, 2845609), (13, 1532251), (71, 280553), (91, 218893), (497, 40079), (923, 21581), (3083, 6461)]