261888890319

素因数分解:

$3^2\times 7^2\times {\mathrm{593852359}}^1$

素因数の和:593852379

約数の個数: 18

約数和(自身を含む): 440044598760

約数和(自身を除く): 178155708441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 593852359, 1781557077, 4156966513, 5344671231, 12470899539, 29098765591, 37412698617, 87296296773, 261888890319]

約数ペア:

[(1, 261888890319), (3, 87296296773), (7, 37412698617), (9, 29098765591), (21, 12470899539), (49, 5344671231), (63, 4156966513), (147, 1781557077), (441, 593852359)]