20605739

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 26998272

約数和(自身を除く): 6392533

約数列:

[1, 7, 11, 41, 61, 77, 107, 287, 427, 451, 671, 749, 1177, 2501, 3157, 4387, 4697, 6527, 8239, 17507, 27511, 30709, 45689, 48257, 71797, 192577, 267607, 337799, 502579, 1873249, 2943677, 20605739]

約数ペア:

[(1, 20605739), (7, 2943677), (11, 1873249), (41, 502579), (61, 337799), (77, 267607), (107, 192577), (287, 71797), (427, 48257), (451, 45689), (671, 30709), (749, 27511), (1177, 17507), (2501, 8239), (3157, 6527), (4387, 4697)]