18405247

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{1301}}^1$

素因数の和:1398

約数の個数: 16

約数和(自身を含む): 21998592

約数和(自身を除く): 3593345

約数列:

[1, 7, 43, 47, 301, 329, 1301, 2021, 9107, 14147, 55943, 61147, 391601, 428029, 2629321, 18405247]

約数ペア:

[(1, 18405247), (7, 2629321), (43, 428029), (47, 391601), (301, 61147), (329, 55943), (1301, 14147), (2021, 9107)]