8491640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4937}}^1$

素因数の和:4991

約数の個数: 32

約数和(自身を含む): 19554480

約数和(自身を除く): 11062840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 4937, 9874, 19748, 24685, 39496, 49370, 98740, 197480, 212291, 424582, 849164, 1061455, 1698328, 2122910, 4245820, 8491640]

約数ペア:

[(1, 8491640), (2, 4245820), (4, 2122910), (5, 1698328), (8, 1061455), (10, 849164), (20, 424582), (40, 212291), (43, 197480), (86, 98740), (172, 49370), (215, 39496), (344, 24685), (430, 19748), (860, 9874), (1720, 4937)]