18680319

素因数分解:

$3^2\times 7^2\times {\mathrm{42359}}^1$

素因数の和:42379

約数の個数: 18

約数和(自身を含む): 31388760

約数和(自身を除く): 12708441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 42359, 127077, 296513, 381231, 889539, 2075591, 2668617, 6226773, 18680319]

約数ペア:

[(1, 18680319), (3, 6226773), (7, 2668617), (9, 2075591), (21, 889539), (49, 381231), (63, 296513), (147, 127077), (441, 42359)]