389618740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2782991}}^1$

素因数の和:2783007

約数の個数: 24

約数和(自身を含む): 935085312

約数和(自身を除く): 545466572

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2782991, 5565982, 11131964, 13914955, 19480937, 27829910, 38961874, 55659820, 77923748, 97404685, 194809370, 389618740]

約数ペア:

[(1, 389618740), (2, 194809370), (4, 97404685), (5, 77923748), (7, 55659820), (10, 38961874), (14, 27829910), (20, 19480937), (28, 13914955), (35, 11131964), (70, 5565982), (140, 2782991)]