21353087

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{1583}}^1$

素因数の和:1678

約数の個数: 16

約数和(自身を含む): 25546752

約数和(自身を除く): 4193665

約数列:

[1, 7, 41, 47, 287, 329, 1583, 1927, 11081, 13489, 64903, 74401, 454321, 520807, 3050441, 21353087]

約数ペア:

[(1, 21353087), (7, 3050441), (41, 520807), (47, 454321), (287, 74401), (329, 64903), (1583, 13489), (1927, 11081)]