202000180

素因数分解:

$2^2\times 5^1\times {\mathrm{10100009}}^1$

素因数の和:10100018

約数の個数: 12

約数和(自身を含む): 424200420

約数和(自身を除く): 222200240

約数列:

[1, 2, 4, 5, 10, 20, 10100009, 20200018, 40400036, 50500045, 101000090, 202000180]

約数ペア:

[(1, 202000180), (2, 101000090), (4, 50500045), (5, 40400036), (10, 20200018), (20, 10100009)]