409280

素因数分解:

$2^6\times 5^1\times {\mathrm{1279}}^1$

素因数の和:1296

約数の個数: 28

約数和(自身を含む): 975360

約数和(自身を除く): 566080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 1279, 2558, 5116, 6395, 10232, 12790, 20464, 25580, 40928, 51160, 81856, 102320, 204640, 409280]

約数ペア:

[(1, 409280), (2, 204640), (4, 102320), (5, 81856), (8, 51160), (10, 40928), (16, 25580), (20, 20464), (32, 12790), (40, 10232), (64, 6395), (80, 5116), (160, 2558), (320, 1279)]