261283827

素因数分解:

$3^1\times 7^2\times {\mathrm{1777441}}^1$

素因数の和:1777458

約数の個数: 12

約数和(自身を含む): 405256776

約数和(自身を除く): 143972949

約数列:

[1, 3, 7, 21, 49, 147, 1777441, 5332323, 12442087, 37326261, 87094609, 261283827]

約数ペア:

[(1, 261283827), (3, 87094609), (7, 37326261), (21, 12442087), (49, 5332323), (147, 1777441)]