19731519

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{12821}}^1$

素因数の和:12852

約数の個数: 20

約数和(自身を含む): 31029240

約数和(自身を除く): 11297721

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 12821, 38463, 115389, 243599, 346167, 730797, 1038501, 2192391, 6577173, 19731519]

約数ペア:

[(1, 19731519), (3, 6577173), (9, 2192391), (19, 1038501), (27, 730797), (57, 346167), (81, 243599), (171, 115389), (513, 38463), (1539, 12821)]