820701

素因数分解:

$3^2\times 7^2\times {\mathrm{1861}}^1$

素因数の和:1881

約数の個数: 18

約数和(自身を含む): 1379742

約数和(自身を除く): 559041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 1861, 5583, 13027, 16749, 39081, 91189, 117243, 273567, 820701]

約数ペア:

[(1, 820701), (3, 273567), (7, 117243), (9, 91189), (21, 39081), (49, 16749), (63, 13027), (147, 5583), (441, 1861)]