18672880

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2311}}^1$

素因数の和:2425

約数の個数: 40

約数和(自身を含む): 43863264

約数和(自身を除く): 25190384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 2311, 4040, 4622, 8080, 9244, 11555, 18488, 23110, 36976, 46220, 92440, 184880, 233411, 466822, 933644, 1167055, 1867288, 2334110, 3734576, 4668220, 9336440, 18672880]

約数ペア:

[(1, 18672880), (2, 9336440), (4, 4668220), (5, 3734576), (8, 2334110), (10, 1867288), (16, 1167055), (20, 933644), (40, 466822), (80, 233411), (101, 184880), (202, 92440), (404, 46220), (505, 36976), (808, 23110), (1010, 18488), (1616, 11555), (2020, 9244), (2311, 8080), (4040, 4622)]