21117872

素因数分解:

$2^4\times {\mathrm{353}}^1\times {\mathrm{3739}}^1$

素因数の和:4100

約数の個数: 20

約数和(自身を含む): 41042760

約数和(自身を除く): 19924888

約数列:

[1, 2, 4, 8, 16, 353, 706, 1412, 2824, 3739, 5648, 7478, 14956, 29912, 59824, 1319867, 2639734, 5279468, 10558936, 21117872]

約数ペア:

[(1, 21117872), (2, 10558936), (4, 5279468), (8, 2639734), (16, 1319867), (353, 59824), (706, 29912), (1412, 14956), (2824, 7478), (3739, 5648)]