181631004020

素因数分解:

$2^2\times 5^1\times {\mathrm{9081550201}}^1$

素因数の和:9081550210

約数の個数: 12

約数和(自身を含む): 381425108484

約数和(自身を除く): 199794104464

約数列:

[1, 2, 4, 5, 10, 20, 9081550201, 18163100402, 36326200804, 45407751005, 90815502010, 181631004020]

約数ペア:

[(1, 181631004020), (2, 90815502010), (4, 45407751005), (5, 36326200804), (10, 18163100402), (20, 9081550201)]