18617207

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{19997}}^1$

素因数の和:20030

約数の個数: 12

約数和(自身を含む): 22797720

約数和(自身を除く): 4180513

約数列:

[1, 7, 19, 49, 133, 931, 19997, 139979, 379943, 979853, 2659601, 18617207]

約数ペア:

[(1, 18617207), (7, 2659601), (19, 979853), (49, 379943), (133, 139979), (931, 19997)]