20106807

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{313}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 34364160

約数和(自身を除く): 14257353

約数列:

[1, 3, 7, 19, 21, 23, 49, 57, 69, 133, 147, 161, 313, 399, 437, 483, 931, 939, 1127, 1311, 2191, 2793, 3059, 3381, 5947, 6573, 7199, 9177, 15337, 17841, 21413, 21597, 41629, 46011, 50393, 64239, 124887, 136781, 151179, 291403, 352751, 410343, 874209, 957467, 1058253, 2872401, 6702269, 20106807]

約数ペア:

[(1, 20106807), (3, 6702269), (7, 2872401), (19, 1058253), (21, 957467), (23, 874209), (49, 410343), (57, 352751), (69, 291403), (133, 151179), (147, 136781), (161, 124887), (313, 64239), (399, 50393), (437, 46011), (483, 41629), (931, 21597), (939, 21413), (1127, 17841), (1311, 15337), (2191, 9177), (2793, 7199), (3059, 6573), (3381, 5947)]