128371761

素因数分解:

$3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{25793}}^1$

素因数の和:25885

約数の個数: 24

約数和(自身を含む): 214606080

約数和(自身を除く): 86234319

約数列:

[1, 3, 7, 9, 21, 63, 79, 237, 553, 711, 1659, 4977, 25793, 77379, 180551, 232137, 541653, 1624959, 2037647, 6112941, 14263529, 18338823, 42790587, 128371761]

約数ペア:

[(1, 128371761), (3, 42790587), (7, 18338823), (9, 14263529), (21, 6112941), (63, 2037647), (79, 1624959), (237, 541653), (553, 232137), (711, 180551), (1659, 77379), (4977, 25793)]