12520781

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{617}}^1$

素因数の和:860

約数の個数: 16

約数和(自身を含む): 15504384

約数和(自身を除く): 2983603

約数列:

[1, 7, 13, 91, 223, 617, 1561, 2899, 4319, 8021, 20293, 56147, 137591, 963137, 1788683, 12520781]

約数ペア:

[(1, 12520781), (7, 1788683), (13, 963137), (91, 137591), (223, 56147), (617, 20293), (1561, 8021), (2899, 4319)]