19451721

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{9721}}^1$

素因数の和:9776

約数の個数: 16

約数和(自身を含む): 27999360

約数和(自身を除く): 8547639

約数列:

[1, 3, 23, 29, 69, 87, 667, 2001, 9721, 29163, 223583, 281909, 670749, 845727, 6483907, 19451721]

約数ペア:

[(1, 19451721), (3, 6483907), (23, 845727), (29, 670749), (69, 281909), (87, 223583), (667, 29163), (2001, 9721)]