21823221

素因数分解:

$3^1\times 7^1\times {\mathrm{523}}^1\times {\mathrm{1987}}^1$

素因数の和:2520

約数の個数: 16

約数和(自身を含む): 33334784

約数和(自身を除く): 11511563

約数列:

[1, 3, 7, 21, 523, 1569, 1987, 3661, 5961, 10983, 13909, 41727, 1039201, 3117603, 7274407, 21823221]

約数ペア:

[(1, 21823221), (3, 7274407), (7, 3117603), (21, 1039201), (523, 41727), (1569, 13909), (1987, 10983), (3661, 5961)]