18040771

素因数分解:

$7^3\times {\mathrm{149}}^1\times {\mathrm{353}}^1$

素因数の和:523

約数の個数: 16

約数和(自身を含む): 21240000

約数和(自身を除く): 3199229

約数列:

[1, 7, 49, 149, 343, 353, 1043, 2471, 7301, 17297, 51107, 52597, 121079, 368179, 2577253, 18040771]

約数ペア:

[(1, 18040771), (7, 2577253), (49, 368179), (149, 121079), (343, 52597), (353, 51107), (1043, 17297), (2471, 7301)]