128840290

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{348217}}^1$

素因数の和:348261

約数の個数: 16

約数和(自身を含む): 238181112

約数和(自身を除く): 109340822

約数列:

[1, 2, 5, 10, 37, 74, 185, 370, 348217, 696434, 1741085, 3482170, 12884029, 25768058, 64420145, 128840290]

約数ペア:

[(1, 128840290), (2, 64420145), (5, 25768058), (10, 12884029), (37, 3482170), (74, 1741085), (185, 696434), (370, 348217)]