3942220

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{449}}^1$

素因数の和:897

約数の個数: 24

約数和(自身を含む): 8316000

約数和(自身を除く): 4373780

約数列:

[1, 2, 4, 5, 10, 20, 439, 449, 878, 898, 1756, 1796, 2195, 2245, 4390, 4490, 8780, 8980, 197111, 394222, 788444, 985555, 1971110, 3942220]

約数ペア:

[(1, 3942220), (2, 1971110), (4, 985555), (5, 788444), (10, 394222), (20, 197111), (439, 8980), (449, 8780), (878, 4490), (898, 4390), (1756, 2245), (1796, 2195)]