21216404

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{3469}}^1$

素因数の和:3623

約数の個数: 24

約数和(自身を含む): 40807200

約数和(自身を除く): 19590796

約数列:

[1, 2, 4, 11, 22, 44, 139, 278, 556, 1529, 3058, 3469, 6116, 6938, 13876, 38159, 76318, 152636, 482191, 964382, 1928764, 5304101, 10608202, 21216404]

約数ペア:

[(1, 21216404), (2, 10608202), (4, 5304101), (11, 1928764), (22, 964382), (44, 482191), (139, 152636), (278, 76318), (556, 38159), (1529, 13876), (3058, 6938), (3469, 6116)]