21221396

素因数分解:

$2^2\times 7^1\times {\mathrm{311}}^1\times {\mathrm{2437}}^1$

素因数の和:2759

約数の個数: 24

約数和(自身を含む): 42596736

約数和(自身を除く): 21375340

約数列:

[1, 2, 4, 7, 14, 28, 311, 622, 1244, 2177, 2437, 4354, 4874, 8708, 9748, 17059, 34118, 68236, 757907, 1515814, 3031628, 5305349, 10610698, 21221396]

約数ペア:

[(1, 21221396), (2, 10610698), (4, 5305349), (7, 3031628), (14, 1515814), (28, 757907), (311, 68236), (622, 34118), (1244, 17059), (2177, 9748), (2437, 8708), (4354, 4874)]