7956020

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1999}}^1$

素因数の和:2207

約数の個数: 24

約数和(自身を含む): 16800000

約数和(自身を除く): 8843980

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 1999, 3980, 3998, 7996, 9995, 19990, 39980, 397801, 795602, 1591204, 1989005, 3978010, 7956020]

約数ペア:

[(1, 7956020), (2, 3978010), (4, 1989005), (5, 1591204), (10, 795602), (20, 397801), (199, 39980), (398, 19990), (796, 9995), (995, 7996), (1990, 3998), (1999, 3980)]