18887890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{5741}}^1$

素因数の和:5802

約数の個数: 32

約数和(自身を含む): 39688704

約数和(自身を除く): 20800814

約数列:

[1, 2, 5, 7, 10, 14, 35, 47, 70, 94, 235, 329, 470, 658, 1645, 3290, 5741, 11482, 28705, 40187, 57410, 80374, 200935, 269827, 401870, 539654, 1349135, 1888789, 2698270, 3777578, 9443945, 18887890]

約数ペア:

[(1, 18887890), (2, 9443945), (5, 3777578), (7, 2698270), (10, 1888789), (14, 1349135), (35, 539654), (47, 401870), (70, 269827), (94, 200935), (235, 80374), (329, 57410), (470, 40187), (658, 28705), (1645, 11482), (3290, 5741)]