27997767

素因数分解:

$3^2\times 7^2\times {\mathrm{63487}}^1$

素因数の和:63507

約数の個数: 18

約数和(自身を含む): 47044608

約数和(自身を除く): 19046841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 63487, 190461, 444409, 571383, 1333227, 3110863, 3999681, 9332589, 27997767]

約数ペア:

[(1, 27997767), (3, 9332589), (7, 3999681), (9, 3110863), (21, 1333227), (49, 571383), (63, 444409), (147, 190461), (441, 63487)]