20878319

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{11789}}^1$

素因数の和:11830

約数の個数: 16

約数和(自身を含む): 27164160

約数和(自身を除く): 6285841

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 11789, 82523, 129679, 271147, 907753, 1898029, 2982617, 20878319]

約数ペア:

[(1, 20878319), (7, 2982617), (11, 1898029), (23, 907753), (77, 271147), (161, 129679), (253, 82523), (1771, 11789)]