21357868

素因数分解:

$2^2\times 7^1\times {\mathrm{313}}^1\times {\mathrm{2437}}^1$

素因数の和:2761

約数の個数: 24

約数和(自身を含む): 42869792

約数和(自身を除く): 21511924

約数列:

[1, 2, 4, 7, 14, 28, 313, 626, 1252, 2191, 2437, 4382, 4874, 8764, 9748, 17059, 34118, 68236, 762781, 1525562, 3051124, 5339467, 10678934, 21357868]

約数ペア:

[(1, 21357868), (2, 10678934), (4, 5339467), (7, 3051124), (14, 1525562), (28, 762781), (313, 68236), (626, 34118), (1252, 17059), (2191, 9748), (2437, 8764), (4382, 4874)]