20804905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{463}}^1$

素因数の和:541

約数の個数: 32

約数和(自身を含む): 29399040

約数和(自身を除く): 8594135

約数列:

[1, 5, 11, 19, 43, 55, 95, 209, 215, 463, 473, 817, 1045, 2315, 2365, 4085, 5093, 8797, 8987, 19909, 25465, 43985, 44935, 96767, 99545, 218999, 378271, 483835, 1094995, 1891355, 4160981, 20804905]

約数ペア:

[(1, 20804905), (5, 4160981), (11, 1891355), (19, 1094995), (43, 483835), (55, 378271), (95, 218999), (209, 99545), (215, 96767), (463, 44935), (473, 43985), (817, 25465), (1045, 19909), (2315, 8987), (2365, 8797), (4085, 5093)]