21238107

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{12143}}^1$

素因数の和:12210

約数の個数: 16

約数和(自身を含む): 31477248

約数和(自身を除く): 10239141

約数列:

[1, 3, 11, 33, 53, 159, 583, 1749, 12143, 36429, 133573, 400719, 643579, 1930737, 7079369, 21238107]

約数ペア:

[(1, 21238107), (3, 7079369), (11, 1930737), (33, 643579), (53, 400719), (159, 133573), (583, 36429), (1749, 12143)]