20797810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{4397}}^1$

素因数の和:4458

約数の個数: 32

約数和(自身を含む): 41798592

約数和(自身を除く): 21000782

約数列:

[1, 2, 5, 10, 11, 22, 43, 55, 86, 110, 215, 430, 473, 946, 2365, 4397, 4730, 8794, 21985, 43970, 48367, 96734, 189071, 241835, 378142, 483670, 945355, 1890710, 2079781, 4159562, 10398905, 20797810]

約数ペア:

[(1, 20797810), (2, 10398905), (5, 4159562), (10, 2079781), (11, 1890710), (22, 945355), (43, 483670), (55, 378142), (86, 241835), (110, 189071), (215, 96734), (430, 48367), (473, 43970), (946, 21985), (2365, 8794), (4397, 4730)]