20664007

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{2341}}^1$

素因数の和:2458

約数の個数: 16

約数和(自身を含む): 25705792

約数和(自身を除く): 5041785

約数列:

[1, 7, 13, 91, 97, 679, 1261, 2341, 8827, 16387, 30433, 213031, 227077, 1589539, 2952001, 20664007]

約数ペア:

[(1, 20664007), (7, 2952001), (13, 1589539), (91, 227077), (97, 213031), (679, 30433), (1261, 16387), (2341, 8827)]