25642221

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{21001}}^1$

素因数の和:21052

約数の個数: 16

約数和(自身を含む): 38307648

約数和(自身を除く): 12665427

約数列:

[1, 3, 11, 33, 37, 111, 407, 1221, 21001, 63003, 231011, 693033, 777037, 2331111, 8547407, 25642221]

約数ペア:

[(1, 25642221), (3, 8547407), (11, 2331111), (33, 777037), (37, 693033), (111, 231011), (407, 63003), (1221, 21001)]