16531221

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{18307}}^1$

素因数の和:18360

約数の個数: 16

約数和(自身を含む): 25777664

約数和(自身を除く): 9246443

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 18307, 54921, 128149, 384447, 787201, 2361603, 5510407, 16531221]

約数ペア:

[(1, 16531221), (3, 5510407), (7, 2361603), (21, 787201), (43, 384447), (129, 128149), (301, 54921), (903, 18307)]