219881081

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{195103}}^1$

素因数の和:195140

約数の個数: 12

約数和(自身を含む): 266902272

約数和(自身を除く): 47021191

約数列:

[1, 7, 23, 49, 161, 1127, 195103, 1365721, 4487369, 9560047, 31411583, 219881081]

約数ペア:

[(1, 219881081), (7, 31411583), (23, 9560047), (49, 4487369), (161, 1365721), (1127, 195103)]