19984923

素因数分解:

$3^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{2129}}^1$

素因数の和:2291

約数の個数: 24

約数和(自身を含む): 33228000

約数和(自身を除く): 13243077

約数列:

[1, 3, 7, 9, 21, 63, 149, 447, 1043, 1341, 2129, 3129, 6387, 9387, 14903, 19161, 44709, 134127, 317221, 951663, 2220547, 2854989, 6661641, 19984923]

約数ペア:

[(1, 19984923), (3, 6661641), (7, 2854989), (9, 2220547), (21, 951663), (63, 317221), (149, 134127), (447, 44709), (1043, 19161), (1341, 14903), (2129, 9387), (3129, 6387)]