21229228

素因数分解:

$2^2\times {\mathrm{107}}^1\times {\mathrm{193}}^1\times {\mathrm{257}}^1$

素因数の和:561

約数の個数: 24

約数和(自身を含む): 37839312

約数和(自身を除く): 16610084

約数列:

[1, 2, 4, 107, 193, 214, 257, 386, 428, 514, 772, 1028, 20651, 27499, 41302, 49601, 54998, 82604, 99202, 109996, 198404, 5307307, 10614614, 21229228]

約数ペア:

[(1, 21229228), (2, 10614614), (4, 5307307), (107, 198404), (193, 109996), (214, 99202), (257, 82604), (386, 54998), (428, 49601), (514, 41302), (772, 27499), (1028, 20651)]