2789969

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:117

約数の個数: 32

約数和(自身を含む): 3784704

約数和(自身を除く): 994735

約数列:

[1, 7, 13, 23, 31, 43, 91, 161, 217, 299, 301, 403, 559, 713, 989, 1333, 2093, 2821, 3913, 4991, 6923, 9269, 9331, 12857, 17329, 30659, 64883, 89999, 121303, 214613, 398567, 2789969]

約数ペア:

[(1, 2789969), (7, 398567), (13, 214613), (23, 121303), (31, 89999), (43, 64883), (91, 30659), (161, 17329), (217, 12857), (299, 9331), (301, 9269), (403, 6923), (559, 4991), (713, 3913), (989, 2821), (1333, 2093)]