128790837

素因数分解:

$3^3\times 7^1\times {\mathrm{263}}^1\times {\mathrm{2591}}^1$

素因数の和:2870

約数の個数: 32

約数和(自身を含む): 218972160

約数和(自身を除く): 90181323

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 263, 789, 1841, 2367, 2591, 5523, 7101, 7773, 16569, 18137, 23319, 49707, 54411, 69957, 163233, 489699, 681433, 2044299, 4770031, 6132897, 14310093, 18398691, 42930279, 128790837]

約数ペア:

[(1, 128790837), (3, 42930279), (7, 18398691), (9, 14310093), (21, 6132897), (27, 4770031), (63, 2044299), (189, 681433), (263, 489699), (789, 163233), (1841, 69957), (2367, 54411), (2591, 49707), (5523, 23319), (7101, 18137), (7773, 16569)]