1820889

素因数分解:

$3^2\times 7^2\times {\mathrm{4129}}^1$

素因数の和:4149

約数の個数: 18

約数和(自身を含む): 3060330

約数和(自身を除く): 1239441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 4129, 12387, 28903, 37161, 86709, 202321, 260127, 606963, 1820889]

約数ペア:

[(1, 1820889), (3, 606963), (7, 260127), (9, 202321), (21, 86709), (49, 37161), (63, 28903), (147, 12387), (441, 4129)]