13221719

素因数分解:

$7^2\times {\mathrm{239}}^1\times {\mathrm{1129}}^1$

素因数の和:1382

約数の個数: 12

約数和(自身を含む): 15458400

約数和(自身を除く): 2236681

約数列:

[1, 7, 49, 239, 1129, 1673, 7903, 11711, 55321, 269831, 1888817, 13221719]

約数ペア:

[(1, 13221719), (7, 1888817), (49, 269831), (239, 55321), (1129, 11711), (1673, 7903)]