19872923

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{641}}^1$

素因数の和:794

約数の個数: 16

約数和(自身を含む): 23502336

約数和(自身を除く): 3629413

約数列:

[1, 7, 43, 103, 301, 641, 721, 4429, 4487, 27563, 31003, 66023, 192941, 462161, 2838989, 19872923]

約数ペア:

[(1, 19872923), (7, 2838989), (43, 462161), (103, 192941), (301, 66023), (641, 31003), (721, 27563), (4429, 4487)]