28678461

素因数分解:

$3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{12763}}^1$

素因数の和:12880

約数の個数: 16

約数和(自身を含む): 44112384

約数和(自身を除く): 15433923

約数列:

[1, 3, 7, 21, 107, 321, 749, 2247, 12763, 38289, 89341, 268023, 1365641, 4096923, 9559487, 28678461]

約数ペア:

[(1, 28678461), (3, 9559487), (7, 4096923), (21, 1365641), (107, 268023), (321, 89341), (749, 38289), (2247, 12763)]