128436777

素因数分解:

$3^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{19793}}^1$

素因数の和:19909

約数の個数: 24

約数和(自身を含む): 214091904

約数和(自身を除く): 85655127

約数列:

[1, 3, 7, 9, 21, 63, 103, 309, 721, 927, 2163, 6489, 19793, 59379, 138551, 178137, 415653, 1246959, 2038679, 6116037, 14270753, 18348111, 42812259, 128436777]

約数ペア:

[(1, 128436777), (3, 42812259), (7, 18348111), (9, 14270753), (21, 6116037), (63, 2038679), (103, 1246959), (309, 415653), (721, 178137), (927, 138551), (2163, 59379), (6489, 19793)]