28257790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{256889}}^1$

素因数の和:256907

約数の個数: 16

約数和(自身を含む): 55488240

約数和(自身を除く): 27230450

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 256889, 513778, 1284445, 2568890, 2825779, 5651558, 14128895, 28257790]

約数ペア:

[(1, 28257790), (2, 14128895), (5, 5651558), (10, 2825779), (11, 2568890), (22, 1284445), (55, 513778), (110, 256889)]