20555620

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{4871}}^1$

素因数の和:5091

約数の個数: 24

約数和(自身を含む): 43380288

約数和(自身を除く): 22824668

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 4871, 9742, 19484, 24355, 48710, 97420, 1027781, 2055562, 4111124, 5138905, 10277810, 20555620]

約数ペア:

[(1, 20555620), (2, 10277810), (4, 5138905), (5, 4111124), (10, 2055562), (20, 1027781), (211, 97420), (422, 48710), (844, 24355), (1055, 19484), (2110, 9742), (4220, 4871)]