7821009

素因数分解:

$3^3\times 7^1\times {\mathrm{41381}}^1$

素因数の和:41397

約数の個数: 16

約数和(自身を含む): 13242240

約数和(自身を除く): 5421231

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 41381, 124143, 289667, 372429, 869001, 1117287, 2607003, 7821009]

約数ペア:

[(1, 7821009), (3, 2607003), (7, 1117287), (9, 869001), (21, 372429), (27, 289667), (63, 124143), (189, 41381)]