197198020

素因数分解:

$2^2\times 5^1\times {\mathrm{9859901}}^1$

素因数の和:9859910

約数の個数: 12

約数和(自身を含む): 414115884

約数和(自身を除く): 216917864

約数列:

[1, 2, 4, 5, 10, 20, 9859901, 19719802, 39439604, 49299505, 98599010, 197198020]

約数ペア:

[(1, 197198020), (2, 98599010), (4, 49299505), (5, 39439604), (10, 19719802), (20, 9859901)]