19717521

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{353}}^1\times {\mathrm{433}}^1$

素因数の和:832

約数の個数: 16

約数和(自身を含む): 27039936

約数和(自身を除く): 7322415

約数列:

[1, 3, 43, 129, 353, 433, 1059, 1299, 15179, 18619, 45537, 55857, 152849, 458547, 6572507, 19717521]

約数ペア:

[(1, 19717521), (3, 6572507), (43, 458547), (129, 152849), (353, 55857), (433, 45537), (1059, 18619), (1299, 15179)]