21139457913

素因数分解:

$3^2\times 7^1\times {\mathrm{241}}^1\times {\mathrm{1392311}}^1$

素因数の和:1392565

約数の個数: 24

約数和(自身を含む): 35041708416

約数和(自身を除く): 13902250503

約数列:

[1, 3, 7, 9, 21, 63, 241, 723, 1687, 2169, 5061, 15183, 1392311, 4176933, 9746177, 12530799, 29238531, 87715593, 335546951, 1006640853, 2348828657, 3019922559, 7046485971, 21139457913]

約数ペア:

[(1, 21139457913), (3, 7046485971), (7, 3019922559), (9, 2348828657), (21, 1006640853), (63, 335546951), (241, 87715593), (723, 29238531), (1687, 12530799), (2169, 9746177), (5061, 4176933), (15183, 1392311)]