20256397

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{389}}^1$

素因数の和:612

約数の個数: 16

約数和(自身を含む): 23886720

約数和(自身を除く): 3630323

約数列:

[1, 7, 43, 173, 301, 389, 1211, 2723, 7439, 16727, 52073, 67297, 117089, 471079, 2893771, 20256397]

約数ペア:

[(1, 20256397), (7, 2893771), (43, 471079), (173, 117089), (301, 67297), (389, 52073), (1211, 16727), (2723, 7439)]