2097991

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1$

素因数の和:270

約数の個数: 16

約数和(自身を含む): 2548224

約数和(自身を除く): 450233

約数列:

[1, 7, 23, 83, 157, 161, 581, 1099, 1909, 3611, 13031, 13363, 25277, 91217, 299713, 2097991]

約数ペア:

[(1, 2097991), (7, 299713), (23, 91217), (83, 25277), (157, 13363), (161, 13031), (581, 3611), (1099, 1909)]