3928995.00000000

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1999}}^1$

素因数の和:2419

約数の個数: 32

約数和(自身を含む): 73800000

約数和(自身を除く): 41096360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 1999, 2045, 3272, 3998, 4090, 7996, 8180, 9995, 15992, 16360, 19990, 39980, 79960, 817591, 1635182, 3270364, 4087955, 6540728, 8175910, 16351820, 32703640]

約数ペア:

[(1, 32703640), (2, 16351820), (4, 8175910), (5, 6540728), (8, 4087955), (10, 3270364), (20, 1635182), (40, 817591), (409, 79960), (818, 39980), (1636, 19990), (1999, 16360), (2045, 15992), (3272, 9995), (3998, 8180), (4090, 7996)]