28687491

素因数分解:

$3^2\times 7^3\times {\mathrm{9293}}^1$

素因数の和:9320

約数の個数: 24

約数和(自身を含む): 48328800

約数和(自身を除く): 19641309

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 9293, 27879, 65051, 83637, 195153, 455357, 585459, 1366071, 3187499, 4098213, 9562497, 28687491]

約数ペア:

[(1, 28687491), (3, 9562497), (7, 4098213), (9, 3187499), (21, 1366071), (49, 585459), (63, 455357), (147, 195153), (343, 83637), (441, 65051), (1029, 27879), (3087, 9293)]