20012440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71473}}^1$

素因数の和:71491

約数の個数: 32

約数和(自身を含む): 51461280

約数和(自身を除く): 31448840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71473, 142946, 285892, 357365, 500311, 571784, 714730, 1000622, 1429460, 2001244, 2501555, 2858920, 4002488, 5003110, 10006220, 20012440]

約数ペア:

[(1, 20012440), (2, 10006220), (4, 5003110), (5, 4002488), (7, 2858920), (8, 2501555), (10, 2001244), (14, 1429460), (20, 1000622), (28, 714730), (35, 571784), (40, 500311), (56, 357365), (70, 285892), (140, 142946), (280, 71473)]