194785180

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{199}}^1\times {\mathrm{449}}^1$

素因数の和:766

約数の個数: 48

約数和(自身を含む): 415800000

約数和(自身を除く): 221014820

約数列:

[1, 2, 4, 5, 10, 20, 109, 199, 218, 398, 436, 449, 545, 796, 898, 995, 1090, 1796, 1990, 2180, 2245, 3980, 4490, 8980, 21691, 43382, 48941, 86764, 89351, 97882, 108455, 178702, 195764, 216910, 244705, 357404, 433820, 446755, 489410, 893510, 978820, 1787020, 9739259, 19478518, 38957036, 48696295, 97392590, 194785180]

約数ペア:

[(1, 194785180), (2, 97392590), (4, 48696295), (5, 38957036), (10, 19478518), (20, 9739259), (109, 1787020), (199, 978820), (218, 893510), (398, 489410), (436, 446755), (449, 433820), (545, 357404), (796, 244705), (898, 216910), (995, 195764), (1090, 178702), (1796, 108455), (1990, 97882), (2180, 89351), (2245, 86764), (3980, 48941), (4490, 43382), (8980, 21691)]