19904138884

素因数分解:

$2^2\times 7^2\times {\mathrm{101551729}}^1$

素因数の和:101551747

約数の個数: 18

約数和(自身を含む): 40519140270

約数和(自身を除く): 20615001386

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 101551729, 203103458, 406206916, 710862103, 1421724206, 2843448412, 4976034721, 9952069442, 19904138884]

約数ペア:

[(1, 19904138884), (2, 9952069442), (4, 4976034721), (7, 2843448412), (14, 1421724206), (28, 710862103), (49, 406206916), (98, 203103458), (196, 101551729)]