20969767

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{233}}^1$

素因数の和:319

約数の個数: 32

約数和(自身を含む): 27675648

約数和(自身を除く): 6705881

約数列:

[1, 7, 13, 23, 43, 91, 161, 233, 299, 301, 559, 989, 1631, 2093, 3029, 3913, 5359, 6923, 10019, 12857, 21203, 37513, 69667, 70133, 89999, 130247, 230437, 487669, 911729, 1613059, 2995681, 20969767]

約数ペア:

[(1, 20969767), (7, 2995681), (13, 1613059), (23, 911729), (43, 487669), (91, 230437), (161, 130247), (233, 89999), (299, 70133), (301, 69667), (559, 37513), (989, 21203), (1631, 12857), (2093, 10019), (3029, 6923), (3913, 5359)]