28009709

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{9929}}^1$

素因数の和:9980

約数の個数: 16

約数和(自身を含む): 35589120

約数和(自身を除く): 7579411

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 9929, 69503, 129077, 307799, 903539, 2154593, 4001387, 28009709]

約数ペア:

[(1, 28009709), (7, 4001387), (13, 2154593), (31, 903539), (91, 307799), (217, 129077), (403, 69503), (2821, 9929)]