21258335

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{12923}}^1$

素因数の和:12982

約数の個数: 16

約数和(自身を含む): 29776896

約数和(自身を除く): 8518561

約数列:

[1, 5, 7, 35, 47, 235, 329, 1645, 12923, 64615, 90461, 452305, 607381, 3036905, 4251667, 21258335]

約数ペア:

[(1, 21258335), (5, 4251667), (7, 3036905), (35, 607381), (47, 452305), (235, 90461), (329, 64615), (1645, 12923)]