25271919

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{16421}}^1$

素因数の和:16452

約数の個数: 20

約数和(自身を含む): 39741240

約数和(自身を除く): 14469321

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 16421, 49263, 147789, 311999, 443367, 935997, 1330101, 2807991, 8423973, 25271919]

約数ペア:

[(1, 25271919), (3, 8423973), (9, 2807991), (19, 1330101), (27, 935997), (57, 443367), (81, 311999), (171, 147789), (513, 49263), (1539, 16421)]