405359620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{494341}}^1$

素因数の和:494391

約数の個数: 24

約数和(自身を含む): 872019288

約数和(自身を除く): 466659668

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 494341, 988682, 1977364, 2471705, 4943410, 9886820, 20267981, 40535962, 81071924, 101339905, 202679810, 405359620]

約数ペア:

[(1, 405359620), (2, 202679810), (4, 101339905), (5, 81071924), (10, 40535962), (20, 20267981), (41, 9886820), (82, 4943410), (164, 2471705), (205, 1977364), (410, 988682), (820, 494341)]