21530212

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{643}}^1\times {\mathrm{761}}^1$

素因数の和:1419

約数の個数: 24

約数和(自身を含む): 41221152

約数和(自身を除く): 19690940

約数列:

[1, 2, 4, 11, 22, 44, 643, 761, 1286, 1522, 2572, 3044, 7073, 8371, 14146, 16742, 28292, 33484, 489323, 978646, 1957292, 5382553, 10765106, 21530212]

約数ペア:

[(1, 21530212), (2, 10765106), (4, 5382553), (11, 1957292), (22, 978646), (44, 489323), (643, 33484), (761, 28292), (1286, 16742), (1522, 14146), (2572, 8371), (3044, 7073)]