25521280

素因数分解:

$2^7\times 5^1\times {\mathrm{39877}}^1$

素因数の和:39896

約数の個数: 32

約数和(自身を含む): 61013340

約数和(自身を除く): 35492060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 39877, 79754, 159508, 199385, 319016, 398770, 638032, 797540, 1276064, 1595080, 2552128, 3190160, 5104256, 6380320, 12760640, 25521280]

約数ペア:

[(1, 25521280), (2, 12760640), (4, 6380320), (5, 5104256), (8, 3190160), (10, 2552128), (16, 1595080), (20, 1276064), (32, 797540), (40, 638032), (64, 398770), (80, 319016), (128, 199385), (160, 159508), (320, 79754), (640, 39877)]