261269519

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{172001}}^1$

素因数の和:172046

約数の個数: 12

約数和(自身を含む): 313731648

約数和(自身を除く): 52462129

約数列:

[1, 7, 31, 49, 217, 1519, 172001, 1204007, 5332031, 8428049, 37324217, 261269519]

約数ペア:

[(1, 261269519), (7, 37324217), (31, 8428049), (49, 5332031), (217, 1204007), (1519, 172001)]