18648747

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8389}}^1$

素因数の和:8427

約数の個数: 24

約数和(自身を含む): 30539600

約数和(自身を除く): 11890853

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 741, 2223, 8389, 25167, 75501, 109057, 159391, 327171, 478173, 981513, 1434519, 2072083, 6216249, 18648747]

約数ペア:

[(1, 18648747), (3, 6216249), (9, 2072083), (13, 1434519), (19, 981513), (39, 478173), (57, 327171), (117, 159391), (171, 109057), (247, 75501), (741, 25167), (2223, 8389)]