81629480

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47459}}^1$

素因数の和:47513

約数の個数: 32

約数和(自身を含む): 187941600

約数和(自身を除く): 106312120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 47459, 94918, 189836, 237295, 379672, 474590, 949180, 1898360, 2040737, 4081474, 8162948, 10203685, 16325896, 20407370, 40814740, 81629480]

約数ペア:

[(1, 81629480), (2, 40814740), (4, 20407370), (5, 16325896), (8, 10203685), (10, 8162948), (20, 4081474), (40, 2040737), (43, 1898360), (86, 949180), (172, 474590), (215, 379672), (344, 237295), (430, 189836), (860, 94918), (1720, 47459)]