21180412

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{481373}}^1$

素因数の和:481388

約数の個数: 12

約数和(自身を含む): 40435416

約数和(自身を除く): 19255004

約数列:

[1, 2, 4, 11, 22, 44, 481373, 962746, 1925492, 5295103, 10590206, 21180412]

約数ペア:

[(1, 21180412), (2, 10590206), (4, 5295103), (11, 1925492), (22, 962746), (44, 481373)]