28420868

素因数分解:

$2^2\times 7^1\times {\mathrm{421}}^1\times {\mathrm{2411}}^1$

素因数の和:2843

約数の個数: 24

約数和(自身を含む): 57000384

約数和(自身を除く): 28579516

約数列:

[1, 2, 4, 7, 14, 28, 421, 842, 1684, 2411, 2947, 4822, 5894, 9644, 11788, 16877, 33754, 67508, 1015031, 2030062, 4060124, 7105217, 14210434, 28420868]

約数ペア:

[(1, 28420868), (2, 14210434), (4, 7105217), (7, 4060124), (14, 2030062), (28, 1015031), (421, 67508), (842, 33754), (1684, 16877), (2411, 11788), (2947, 9644), (4822, 5894)]