21491658

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{27767}}^1$

素因数の和:27818

約数の個数: 24

約数和(自身を含む): 47649888

約数和(自身を除く): 26158230

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 129, 258, 387, 774, 27767, 55534, 83301, 166602, 249903, 499806, 1193981, 2387962, 3581943, 7163886, 10745829, 21491658]

約数ペア:

[(1, 21491658), (2, 10745829), (3, 7163886), (6, 3581943), (9, 2387962), (18, 1193981), (43, 499806), (86, 249903), (129, 166602), (258, 83301), (387, 55534), (774, 27767)]