20399684739

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{207257}}^1$

素因数の和:207419

約数の個数: 32

約数和(自身を含む): 32100119040

約数和(自身を除く): 11700434301

約数列:

[1, 3, 7, 21, 43, 109, 129, 301, 327, 763, 903, 2289, 4687, 14061, 32809, 98427, 207257, 621771, 1450799, 4352397, 8912051, 22591013, 26736153, 62384357, 67773039, 158137091, 187153071, 474411273, 971413559, 2914240677, 6799894913, 20399684739]

約数ペア:

[(1, 20399684739), (3, 6799894913), (7, 2914240677), (21, 971413559), (43, 474411273), (109, 187153071), (129, 158137091), (301, 67773039), (327, 62384357), (763, 26736153), (903, 22591013), (2289, 8912051), (4687, 4352397), (14061, 1450799), (32809, 621771), (98427, 207257)]