861021920

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{489217}}^1$

素因数の和:489243

約数の個数: 48

約数和(自身を含む): 2219092848

約数和(自身を除く): 1358070928

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 489217, 978434, 1956868, 2446085, 3913736, 4892170, 5381387, 7827472, 9784340, 10762774, 15654944, 19568680, 21525548, 26906935, 39137360, 43051096, 53813870, 78274720, 86102192, 107627740, 172204384, 215255480, 430510960, 861021920]

約数ペア:

[(1, 861021920), (2, 430510960), (4, 215255480), (5, 172204384), (8, 107627740), (10, 86102192), (11, 78274720), (16, 53813870), (20, 43051096), (22, 39137360), (32, 26906935), (40, 21525548), (44, 19568680), (55, 15654944), (80, 10762774), (88, 9784340), (110, 7827472), (160, 5381387), (176, 4892170), (220, 3913736), (352, 2446085), (440, 1956868), (880, 978434), (1760, 489217)]