20677865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{18713}}^1$

素因数の和:18748

約数の個数: 16

約数和(自身を含む): 28295568

約数和(自身を除く): 7617703

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 18713, 93565, 243269, 318121, 1216345, 1590605, 4135573, 20677865]

約数ペア:

[(1, 20677865), (5, 4135573), (13, 1590605), (17, 1216345), (65, 318121), (85, 243269), (221, 93565), (1105, 18713)]