21239397

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{4283}}^1$

素因数の和:4337

約数の個数: 24

約数和(自身を含む): 33415200

約数和(自身を除く): 12175803

約数列:

[1, 3, 9, 19, 29, 57, 87, 171, 261, 551, 1653, 4283, 4959, 12849, 38547, 81377, 124207, 244131, 372621, 732393, 1117863, 2359933, 7079799, 21239397]

約数ペア:

[(1, 21239397), (3, 7079799), (9, 2359933), (19, 1117863), (29, 732393), (57, 372621), (87, 244131), (171, 124207), (261, 81377), (551, 38547), (1653, 12849), (4283, 4959)]