21665788

素因数分解:

$2^2\times {\mathrm{107}}^1\times {\mathrm{223}}^1\times {\mathrm{227}}^1$

素因数の和:561

約数の個数: 24

約数和(自身を含む): 38610432

約数和(自身を除く): 16944644

約数列:

[1, 2, 4, 107, 214, 223, 227, 428, 446, 454, 892, 908, 23861, 24289, 47722, 48578, 50621, 95444, 97156, 101242, 202484, 5416447, 10832894, 21665788]

約数ペア:

[(1, 21665788), (2, 10832894), (4, 5416447), (107, 202484), (214, 101242), (223, 97156), (227, 95444), (428, 50621), (446, 48578), (454, 47722), (892, 24289), (908, 23861)]