20686827

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{739}}^1$

素因数の和:823

約数の個数: 32

約数和(自身を含む): 33341440

約数和(自身を除く): 12654613

約数列:

[1, 3, 7, 21, 31, 43, 93, 129, 217, 301, 651, 739, 903, 1333, 2217, 3999, 5173, 9331, 15519, 22909, 27993, 31777, 68727, 95331, 160363, 222439, 481089, 667317, 985087, 2955261, 6895609, 20686827]

約数ペア:

[(1, 20686827), (3, 6895609), (7, 2955261), (21, 985087), (31, 667317), (43, 481089), (93, 222439), (129, 160363), (217, 95331), (301, 68727), (651, 31777), (739, 27993), (903, 22909), (1333, 15519), (2217, 9331), (3999, 5173)]