128660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{919}}^1$

素因数の和:935

約数の個数: 24

約数和(自身を含む): 309120

約数和(自身を除く): 180460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 919, 1838, 3676, 4595, 6433, 9190, 12866, 18380, 25732, 32165, 64330, 128660]

約数ペア:

[(1, 128660), (2, 64330), (4, 32165), (5, 25732), (7, 18380), (10, 12866), (14, 9190), (20, 6433), (28, 4595), (35, 3676), (70, 1838), (140, 919)]