19983691

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{5107}}^1$

素因数の和:5170

約数の個数: 16

約数和(自身を含む): 25172224

約数和(自身を除く): 5188533

約数列:

[1, 7, 13, 43, 91, 301, 559, 3913, 5107, 35749, 66391, 219601, 464737, 1537207, 2854813, 19983691]

約数ペア:

[(1, 19983691), (7, 2854813), (13, 1537207), (43, 464737), (91, 219601), (301, 66391), (559, 35749), (3913, 5107)]