2019199640

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{490097}}^1$

素因数の和:490211

約数の個数: 32

約数和(自身を含む): 4587317280

約数和(自身を除く): 2568117640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 490097, 980194, 1960388, 2450485, 3920776, 4900970, 9801940, 19603880, 50479991, 100959982, 201919964, 252399955, 403839928, 504799910, 1009599820, 2019199640]

約数ペア:

[(1, 2019199640), (2, 1009599820), (4, 504799910), (5, 403839928), (8, 252399955), (10, 201919964), (20, 100959982), (40, 50479991), (103, 19603880), (206, 9801940), (412, 4900970), (515, 3920776), (824, 2450485), (1030, 1960388), (2060, 980194), (4120, 490097)]