21132507

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{15619}}^1$

素因数の和:15674

約数の個数: 16

約数和(自身を含む): 31489920

約数和(自身を除く): 10357413

約数列:

[1, 3, 11, 33, 41, 123, 451, 1353, 15619, 46857, 171809, 515427, 640379, 1921137, 7044169, 21132507]

約数ペア:

[(1, 21132507), (3, 7044169), (11, 1921137), (33, 640379), (41, 515427), (123, 171809), (451, 46857), (1353, 15619)]