12640964

素因数分解:

$2^2\times 7^1\times {\mathrm{661}}^1\times {\mathrm{683}}^1$

素因数の和:1355

約数の個数: 24

約数和(自身を含む): 25357248

約数和(自身を除く): 12716284

約数列:

[1, 2, 4, 7, 14, 28, 661, 683, 1322, 1366, 2644, 2732, 4627, 4781, 9254, 9562, 18508, 19124, 451463, 902926, 1805852, 3160241, 6320482, 12640964]

約数ペア:

[(1, 12640964), (2, 6320482), (4, 3160241), (7, 1805852), (14, 902926), (28, 451463), (661, 19124), (683, 18508), (1322, 9562), (1366, 9254), (2644, 4781), (2732, 4627)]