65128660

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{75731}}^1$

素因数の和:75783

約数の個数: 24

約数和(自身を含む): 139952736

約数和(自身を除く): 74824076

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 75731, 151462, 302924, 378655, 757310, 1514620, 3256433, 6512866, 13025732, 16282165, 32564330, 65128660]

約数ペア:

[(1, 65128660), (2, 32564330), (4, 16282165), (5, 13025732), (10, 6512866), (20, 3256433), (43, 1514620), (86, 757310), (172, 378655), (215, 302924), (430, 151462), (860, 75731)]