21700161

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 37425024

約数和(自身を除く): 15724863

約数列:

[1, 3, 7, 9, 21, 53, 63, 67, 97, 159, 201, 291, 371, 469, 477, 603, 679, 873, 1113, 1407, 2037, 3339, 3551, 4221, 5141, 6111, 6499, 10653, 15423, 19497, 24857, 31959, 35987, 45493, 46269, 58491, 74571, 107961, 136479, 223713, 323883, 344447, 409437, 1033341, 2411129, 3100023, 7233387, 21700161]

約数ペア:

[(1, 21700161), (3, 7233387), (7, 3100023), (9, 2411129), (21, 1033341), (53, 409437), (63, 344447), (67, 323883), (97, 223713), (159, 136479), (201, 107961), (291, 74571), (371, 58491), (469, 46269), (477, 45493), (603, 35987), (679, 31959), (873, 24857), (1113, 19497), (1407, 15423), (2037, 10653), (3339, 6499), (3551, 6111), (4221, 5141)]