25765780

素因数分解:

$2^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1949}}^1$

素因数の和:2619

約数の個数: 24

約数和(自身を含む): 54217800

約数和(自身を除く): 28452020

約数列:

[1, 2, 4, 5, 10, 20, 661, 1322, 1949, 2644, 3305, 3898, 6610, 7796, 9745, 13220, 19490, 38980, 1288289, 2576578, 5153156, 6441445, 12882890, 25765780]

約数ペア:

[(1, 25765780), (2, 12882890), (4, 6441445), (5, 5153156), (10, 2576578), (20, 1288289), (661, 38980), (1322, 19490), (1949, 13220), (2644, 9745), (3305, 7796), (3898, 6610)]