19804811

素因数分解:

${\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{499}}^1$

素因数の和:626

約数の個数: 16

約数和(自身を含む): 22176000

約数和(自身を除く): 2371189

約数列:

[1, 13, 43, 71, 499, 559, 923, 3053, 6487, 21457, 35429, 39689, 278941, 460577, 1523447, 19804811]

約数ペア:

[(1, 19804811), (13, 1523447), (43, 460577), (71, 278941), (499, 39689), (559, 35429), (923, 21457), (3053, 6487)]