21991244

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{499801}}^1$

素因数の和:499816

約数の個数: 12

約数和(自身を含む): 41983368

約数和(自身を除く): 19992124

約数列:

[1, 2, 4, 11, 22, 44, 499801, 999602, 1999204, 5497811, 10995622, 21991244]

約数ペア:

[(1, 21991244), (2, 10995622), (4, 5497811), (11, 1999204), (22, 999602), (44, 499801)]