663840981

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{1294037}}^1$

素因数の和:1294065

約数の個数: 16

約数和(自身を含む): 1035230400

約数和(自身を除く): 371389419

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 1294037, 3882111, 11646333, 24586703, 34938999, 73760109, 221280327, 663840981]

約数ペア:

[(1, 663840981), (3, 221280327), (9, 73760109), (19, 34938999), (27, 24586703), (57, 11646333), (171, 3882111), (513, 1294037)]