25738220

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{2621}}^1$

素因数の和:3121

約数の個数: 24

約数和(自身を含む): 54181008

約数和(自身を除く): 28442788

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 2621, 4910, 5242, 9820, 10484, 13105, 26210, 52420, 1286911, 2573822, 5147644, 6434555, 12869110, 25738220]

約数ペア:

[(1, 25738220), (2, 12869110), (4, 6434555), (5, 5147644), (10, 2573822), (20, 1286911), (491, 52420), (982, 26210), (1964, 13105), (2455, 10484), (2621, 9820), (4910, 5242)]