21249767

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 27869184

約数和(自身を除く): 6619417

約数列:

[1, 7, 11, 41, 53, 77, 127, 287, 371, 451, 583, 889, 1397, 2173, 3157, 4081, 5207, 6731, 9779, 15211, 23903, 36449, 47117, 57277, 74041, 167321, 275971, 400939, 518287, 1931797, 3035681, 21249767]

約数ペア:

[(1, 21249767), (7, 3035681), (11, 1931797), (41, 518287), (53, 400939), (77, 275971), (127, 167321), (287, 74041), (371, 57277), (451, 47117), (583, 36449), (889, 23903), (1397, 15211), (2173, 9779), (3157, 6731), (4081, 5207)]