21356408

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{65111}}^1$

素因数の和:65158

約数の個数: 16

約数和(自身を含む): 41020560

約数和(自身を除く): 19664152

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 65111, 130222, 260444, 520888, 2669551, 5339102, 10678204, 21356408]

約数ペア:

[(1, 21356408), (2, 10678204), (4, 5339102), (8, 2669551), (41, 520888), (82, 260444), (164, 130222), (328, 65111)]