19872321

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{373}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 31595520

約数和(自身を除く): 11723199

約数列:

[1, 3, 7, 21, 43, 59, 129, 177, 301, 373, 413, 903, 1119, 1239, 2537, 2611, 7611, 7833, 16039, 17759, 22007, 48117, 53277, 66021, 112273, 154049, 336819, 462147, 946301, 2838903, 6624107, 19872321]

約数ペア:

[(1, 19872321), (3, 6624107), (7, 2838903), (21, 946301), (43, 462147), (59, 336819), (129, 154049), (177, 112273), (301, 66021), (373, 53277), (413, 48117), (903, 22007), (1119, 17759), (1239, 16039), (2537, 7833), (2611, 7611)]