28856781

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{193}}^1\times {\mathrm{449}}^1$

素因数の和:685

約数の個数: 24

約数和(自身を含む): 43126200

約数和(自身を除く): 14269419

約数列:

[1, 3, 9, 37, 111, 193, 333, 449, 579, 1347, 1737, 4041, 7141, 16613, 21423, 49839, 64269, 86657, 149517, 259971, 779913, 3206309, 9618927, 28856781]

約数ペア:

[(1, 28856781), (3, 9618927), (9, 3206309), (37, 779913), (111, 259971), (193, 149517), (333, 86657), (449, 64269), (579, 49839), (1347, 21423), (1737, 16613), (4041, 7141)]