21000577648

素因数分解:

$2^4\times {\mathrm{8803}}^1\times {\mathrm{149101}}^1$

素因数の和:157912

約数の個数: 20

約数和(自身を含む): 40693514248

約数和(自身を除く): 19692936600

約数列:

[1, 2, 4, 8, 16, 8803, 17606, 35212, 70424, 140848, 149101, 298202, 596404, 1192808, 2385616, 1312536103, 2625072206, 5250144412, 10500288824, 21000577648]

約数ペア:

[(1, 21000577648), (2, 10500288824), (4, 5250144412), (8, 2625072206), (16, 1312536103), (8803, 2385616), (17606, 1192808), (35212, 596404), (70424, 298202), (140848, 149101)]