28880397

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{197}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 23011443

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 179, 197, 273, 537, 591, 819, 1253, 1379, 1611, 1773, 2327, 2561, 3759, 4137, 6981, 7683, 11277, 12411, 16289, 17927, 20943, 23049, 35263, 48867, 53781, 105789, 146601, 161343, 246841, 317367, 458419, 740523, 1375257, 2221569, 3208933, 4125771, 9626799, 28880397]

約数ペア:

[(1, 28880397), (3, 9626799), (7, 4125771), (9, 3208933), (13, 2221569), (21, 1375257), (39, 740523), (63, 458419), (91, 317367), (117, 246841), (179, 161343), (197, 146601), (273, 105789), (537, 53781), (591, 48867), (819, 35263), (1253, 23049), (1379, 20943), (1611, 17927), (1773, 16289), (2327, 12411), (2561, 11277), (3759, 7683), (4137, 6981)]