21919521

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29581}}^1$

素因数の和:29616

約数の個数: 16

約数和(自身を含む): 33131840

約数和(自身を除く): 11212319

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 29581, 88743, 384553, 562039, 1153659, 1686117, 7306507, 21919521]

約数ペア:

[(1, 21919521), (3, 7306507), (13, 1686117), (19, 1153659), (39, 562039), (57, 384553), (247, 88743), (741, 29581)]