21332002880

素因数分解:

$2^6\times 5^1\times {\mathrm{66662509}}^1$

素因数の和:66662526

約数の個数: 28

約数和(自身を含む): 50796832620

約数和(自身を除く): 29464829740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66662509, 133325018, 266650036, 333312545, 533300072, 666625090, 1066600144, 1333250180, 2133200288, 2666500360, 4266400576, 5333000720, 10666001440, 21332002880]

約数ペア:

[(1, 21332002880), (2, 10666001440), (4, 5333000720), (5, 4266400576), (8, 2666500360), (10, 2133200288), (16, 1333250180), (20, 1066600144), (32, 666625090), (40, 533300072), (64, 333312545), (80, 266650036), (160, 133325018), (320, 66662509)]