12820311

素因数分解:

$3^2\times 7^3\times {\mathrm{4153}}^1$

素因数の和:4180

約数の個数: 24

約数和(自身を含む): 21600800

約数和(自身を除く): 8780489

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 4153, 12459, 29071, 37377, 87213, 203497, 261639, 610491, 1424479, 1831473, 4273437, 12820311]

約数ペア:

[(1, 12820311), (3, 4273437), (7, 1831473), (9, 1424479), (21, 610491), (49, 261639), (63, 203497), (147, 87213), (343, 37377), (441, 29071), (1029, 12459), (3087, 4153)]