2020820

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1279}}^1$

素因数の和:1367

約数の個数: 24

約数和(自身を含む): 4300800

約数和(自身を除く): 2279980

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1279, 1580, 2558, 5116, 6395, 12790, 25580, 101041, 202082, 404164, 505205, 1010410, 2020820]

約数ペア:

[(1, 2020820), (2, 1010410), (4, 505205), (5, 404164), (10, 202082), (20, 101041), (79, 25580), (158, 12790), (316, 6395), (395, 5116), (790, 2558), (1279, 1580)]