21993148

素因数分解:

$2^2\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{691}}^1$

素因数の和:877

約数の個数: 24

約数和(自身を含む): 39430160

約数和(自身を除く): 17437012

約数列:

[1, 2, 4, 73, 109, 146, 218, 292, 436, 691, 1382, 2764, 7957, 15914, 31828, 50443, 75319, 100886, 150638, 201772, 301276, 5498287, 10996574, 21993148]

約数ペア:

[(1, 21993148), (2, 10996574), (4, 5498287), (73, 301276), (109, 201772), (146, 150638), (218, 100886), (292, 75319), (436, 50443), (691, 31828), (1382, 15914), (2764, 7957)]