89900180

素因数分解:

$2^2\times 5^1\times {\mathrm{4495009}}^1$

素因数の和:4495018

約数の個数: 12

約数和(自身を含む): 188790420

約数和(自身を除く): 98890240

約数列:

[1, 2, 4, 5, 10, 20, 4495009, 8990018, 17980036, 22475045, 44950090, 89900180]

約数ペア:

[(1, 89900180), (2, 44950090), (4, 22475045), (5, 17980036), (10, 8990018), (20, 4495009)]