28007217

素因数分解:

$3^2\times 7^1\times {\mathrm{419}}^1\times {\mathrm{1061}}^1$

素因数の和:1493

約数の個数: 24

約数和(自身を含む): 46388160

約数和(自身を除く): 18380943

約数列:

[1, 3, 7, 9, 21, 63, 419, 1061, 1257, 2933, 3183, 3771, 7427, 8799, 9549, 22281, 26397, 66843, 444559, 1333677, 3111913, 4001031, 9335739, 28007217]

約数ペア:

[(1, 28007217), (3, 9335739), (7, 4001031), (9, 3111913), (21, 1333677), (63, 444559), (419, 66843), (1061, 26397), (1257, 22281), (2933, 9549), (3183, 8799), (3771, 7427)]