129744640

素因数分解:

$2^8\times 5^1\times {\mathrm{101363}}^1$

素因数の和:101384

約数の個数: 36

約数和(自身を含む): 310782024

約数和(自身を除く): 181037384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 101363, 202726, 405452, 506815, 810904, 1013630, 1621808, 2027260, 3243616, 4054520, 6487232, 8109040, 12974464, 16218080, 25948928, 32436160, 64872320, 129744640]

約数ペア:

[(1, 129744640), (2, 64872320), (4, 32436160), (5, 25948928), (8, 16218080), (10, 12974464), (16, 8109040), (20, 6487232), (32, 4054520), (40, 3243616), (64, 2027260), (80, 1621808), (128, 1013630), (160, 810904), (256, 506815), (320, 405452), (640, 202726), (1280, 101363)]