21427604

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{486991}}^1$

素因数の和:487006

約数の個数: 12

約数和(自身を含む): 40907328

約数和(自身を除く): 19479724

約数列:

[1, 2, 4, 11, 22, 44, 486991, 973982, 1947964, 5356901, 10713802, 21427604]

約数ペア:

[(1, 21427604), (2, 10713802), (4, 5356901), (11, 1947964), (22, 973982), (44, 486991)]