19220571

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 31799040

約数和(自身を除く): 12578469

約数列:

[1, 3, 9, 19, 23, 27, 57, 69, 81, 171, 181, 207, 243, 437, 513, 543, 621, 1311, 1539, 1629, 1863, 3439, 3933, 4163, 4617, 4887, 5589, 10317, 11799, 12489, 14661, 30951, 35397, 37467, 43983, 79097, 92853, 106191, 112401, 237291, 278559, 337203, 711873, 835677, 1011609, 2135619, 6406857, 19220571]

約数ペア:

[(1, 19220571), (3, 6406857), (9, 2135619), (19, 1011609), (23, 835677), (27, 711873), (57, 337203), (69, 278559), (81, 237291), (171, 112401), (181, 106191), (207, 92853), (243, 79097), (437, 43983), (513, 37467), (543, 35397), (621, 30951), (1311, 14661), (1539, 12489), (1629, 11799), (1863, 10317), (3439, 5589), (3933, 4887), (4163, 4617)]