156621440

素因数分解:

$2^7\times 5^1\times {\mathrm{244721}}^1$

素因数の和:244740

約数の個数: 32

約数和(自身を含む): 374424660

約数和(自身を除く): 217803220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 244721, 489442, 978884, 1223605, 1957768, 2447210, 3915536, 4894420, 7831072, 9788840, 15662144, 19577680, 31324288, 39155360, 78310720, 156621440]

約数ペア:

[(1, 156621440), (2, 78310720), (4, 39155360), (5, 31324288), (8, 19577680), (10, 15662144), (16, 9788840), (20, 7831072), (32, 4894420), (40, 3915536), (64, 2447210), (80, 1957768), (128, 1223605), (160, 978884), (320, 489442), (640, 244721)]