7921991

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:275

約数の個数: 24

約数和(自身を含む): 10214400

約数和(自身を除く): 2292409

約数列:

[1, 7, 11, 47, 77, 121, 199, 329, 517, 847, 1393, 2189, 3619, 5687, 9353, 15323, 24079, 39809, 65471, 102883, 168553, 720181, 1131713, 7921991]

約数ペア:

[(1, 7921991), (7, 1131713), (11, 720181), (47, 168553), (77, 102883), (121, 65471), (199, 39809), (329, 24079), (517, 15323), (847, 9353), (1393, 5687), (2189, 3619)]