18311111

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6491}}^1$

素因数の和:6542

約数の個数: 16

約数和(自身を含む): 23267328

約数和(自身を除く): 4956217

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 6491, 45437, 84383, 201221, 590681, 1408547, 2615873, 18311111]

約数ペア:

[(1, 18311111), (7, 2615873), (13, 1408547), (31, 590681), (91, 201221), (217, 84383), (403, 45437), (2821, 6491)]