20355391

素因数分解:

$7^1\times {\mathrm{23}}^3\times {\mathrm{239}}^1$

素因数の和:315

約数の個数: 16

約数和(自身を含む): 24422400

約数和(自身を除く): 4067009

約数列:

[1, 7, 23, 161, 239, 529, 1673, 3703, 5497, 12167, 38479, 85169, 126431, 885017, 2907913, 20355391]

約数ペア:

[(1, 20355391), (7, 2907913), (23, 885017), (161, 126431), (239, 85169), (529, 38479), (1673, 12167), (3703, 5497)]