19780172

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{115001}}^1$

素因数の和:115048

約数の個数: 12

約数和(自身を含む): 35420616

約数和(自身を除く): 15640444

約数列:

[1, 2, 4, 43, 86, 172, 115001, 230002, 460004, 4945043, 9890086, 19780172]

約数ペア:

[(1, 19780172), (2, 9890086), (4, 4945043), (43, 460004), (86, 230002), (172, 115001)]