210578020

素因数分解:

$2^2\times 5^1\times {\mathrm{10528901}}^1$

素因数の和:10528910

約数の個数: 12

約数和(自身を含む): 442213884

約数和(自身を除く): 231635864

約数列:

[1, 2, 4, 5, 10, 20, 10528901, 21057802, 42115604, 52644505, 105289010, 210578020]

約数ペア:

[(1, 210578020), (2, 105289010), (4, 52644505), (5, 42115604), (10, 21057802), (20, 10528901)]