18784493

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{797}}^1$

素因数の和:861

約数の個数: 24

約数和(自身を含む): 24198552

約数和(自身を除く): 5414059

約数列:

[1, 7, 13, 37, 49, 91, 259, 481, 637, 797, 1813, 3367, 5579, 10361, 23569, 29489, 39053, 72527, 206423, 383357, 507689, 1444961, 2683499, 18784493]

約数ペア:

[(1, 18784493), (7, 2683499), (13, 1444961), (37, 507689), (49, 383357), (91, 206423), (259, 72527), (481, 39053), (637, 29489), (797, 23569), (1813, 10361), (3367, 5579)]