12551721

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1999}}^1$

素因数の和:2045

約数の個数: 32

約数和(自身を含む): 21504000

約数和(自身を除く): 8952279

約数列:

[1, 3, 7, 13, 21, 23, 39, 69, 91, 161, 273, 299, 483, 897, 1999, 2093, 5997, 6279, 13993, 25987, 41979, 45977, 77961, 137931, 181909, 321839, 545727, 597701, 965517, 1793103, 4183907, 12551721]

約数ペア:

[(1, 12551721), (3, 4183907), (7, 1793103), (13, 965517), (21, 597701), (23, 545727), (39, 321839), (69, 181909), (91, 137931), (161, 77961), (273, 45977), (299, 41979), (483, 25987), (897, 13993), (1999, 6279), (2093, 5997)]