818560

素因数分解:

$2^7\times 5^1\times {\mathrm{1279}}^1$

素因数の和:1298

約数の個数: 32

約数和(自身を含む): 1958400

約数和(自身を除く): 1139840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 1279, 2558, 5116, 6395, 10232, 12790, 20464, 25580, 40928, 51160, 81856, 102320, 163712, 204640, 409280, 818560]

約数ペア:

[(1, 818560), (2, 409280), (4, 204640), (5, 163712), (8, 102320), (10, 81856), (16, 51160), (20, 40928), (32, 25580), (40, 20464), (64, 12790), (80, 10232), (128, 6395), (160, 5116), (320, 2558), (640, 1279)]