128428629

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{197279}}^1$

素因数の和:197320

約数の個数: 16

約数和(自身を含む): 202014720

約数和(自身を除く): 73586091

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 197279, 591837, 1380953, 4142859, 6115649, 18346947, 42809543, 128428629]

約数ペア:

[(1, 128428629), (3, 42809543), (7, 18346947), (21, 6115649), (31, 4142859), (93, 1380953), (217, 591837), (651, 197279)]