206989857

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{331}}^1$

素因数の和:435

約数の個数: 64

約数和(自身を含む): 344217600

約数和(自身を除く): 137227743

約数列:

[1, 3, 9, 19, 23, 27, 53, 57, 69, 159, 171, 207, 331, 437, 477, 513, 621, 993, 1007, 1219, 1311, 1431, 2979, 3021, 3657, 3933, 6289, 7613, 8937, 9063, 10971, 11799, 17543, 18867, 22839, 23161, 27189, 32913, 52629, 56601, 68517, 69483, 144647, 157887, 169803, 205551, 208449, 333317, 403489, 433941, 473661, 625347, 999951, 1210467, 1301823, 2999853, 3631401, 3905469, 7666291, 8999559, 10894203, 22998873, 68996619, 206989857]

約数ペア:

[(1, 206989857), (3, 68996619), (9, 22998873), (19, 10894203), (23, 8999559), (27, 7666291), (53, 3905469), (57, 3631401), (69, 2999853), (159, 1301823), (171, 1210467), (207, 999951), (331, 625347), (437, 473661), (477, 433941), (513, 403489), (621, 333317), (993, 208449), (1007, 205551), (1219, 169803), (1311, 157887), (1431, 144647), (2979, 69483), (3021, 68517), (3657, 56601), (3933, 52629), (6289, 32913), (7613, 27189), (8937, 23161), (9063, 22839), (10971, 18867), (11799, 17543)]