21528128

素因数分解:

$2^6\times {\mathrm{263}}^1\times {\mathrm{1279}}^1$

素因数の和:1554

約数の個数: 28

約数和(自身を含む): 42915840

約数和(自身を除く): 21387712

約数列:

[1, 2, 4, 8, 16, 32, 64, 263, 526, 1052, 1279, 2104, 2558, 4208, 5116, 8416, 10232, 16832, 20464, 40928, 81856, 336377, 672754, 1345508, 2691016, 5382032, 10764064, 21528128]

約数ペア:

[(1, 21528128), (2, 10764064), (4, 5382032), (8, 2691016), (16, 1345508), (32, 672754), (64, 336377), (263, 81856), (526, 40928), (1052, 20464), (1279, 16832), (2104, 10232), (2558, 8416), (4208, 5116)]