20162687139

素因数分解:

$3^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{643949}}^1$

素因数の和:644040

約数の個数: 36

約数和(自身を含む): 34356020400

約数和(自身を除く): 14193333261

約数列:

[1, 3, 7, 9, 21, 49, 63, 71, 147, 213, 441, 497, 639, 1491, 3479, 4473, 10437, 31311, 643949, 1931847, 4507643, 5795541, 13522929, 31553501, 40568787, 45720379, 94660503, 137161137, 283981509, 320042653, 411483411, 960127959, 2240298571, 2880383877, 6720895713, 20162687139]

約数ペア:

[(1, 20162687139), (3, 6720895713), (7, 2880383877), (9, 2240298571), (21, 960127959), (49, 411483411), (63, 320042653), (71, 283981509), (147, 137161137), (213, 94660503), (441, 45720379), (497, 40568787), (639, 31553501), (1491, 13522929), (3479, 5795541), (4473, 4507643), (10437, 1931847), (31311, 643949)]