81567410

素因数分解:

$2^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{20341}}^1$

素因数の和:20749

約数の個数: 16

約数和(自身を含む): 147194712

約数和(自身を除く): 65627302

約数列:

[1, 2, 5, 10, 401, 802, 2005, 4010, 20341, 40682, 101705, 203410, 8156741, 16313482, 40783705, 81567410]

約数ペア:

[(1, 81567410), (2, 40783705), (5, 16313482), (10, 8156741), (401, 203410), (802, 101705), (2005, 40682), (4010, 20341)]