221402020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1581443}}^1$

素因数の和:1581459

約数の個数: 24

約数和(自身を含む): 531365184

約数和(自身を除く): 309963164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1581443, 3162886, 6325772, 7907215, 11070101, 15814430, 22140202, 31628860, 44280404, 55350505, 110701010, 221402020]

約数ペア:

[(1, 221402020), (2, 110701010), (4, 55350505), (5, 44280404), (7, 31628860), (10, 22140202), (14, 15814430), (20, 11070101), (28, 7907215), (35, 6325772), (70, 3162886), (140, 1581443)]