128589123

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{21001}}^1$

素因数の和:21174

約数の個数: 16

約数和(自身を含む): 185825696

約数和(自身を除く): 57236573

約数列:

[1, 3, 13, 39, 157, 471, 2041, 6123, 21001, 63003, 273013, 819039, 3297157, 9891471, 42863041, 128589123]

約数ペア:

[(1, 128589123), (3, 42863041), (13, 9891471), (39, 3297157), (157, 819039), (471, 273013), (2041, 63003), (6123, 21001)]