15640287

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{21107}}^1$

素因数の和:21142

約数の個数: 16

約数和(自身を含む): 23640960

約数和(自身を除く): 8000673

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 21107, 63321, 274391, 401033, 823173, 1203099, 5213429, 15640287]

約数ペア:

[(1, 15640287), (3, 5213429), (13, 1203099), (19, 823173), (39, 401033), (57, 274391), (247, 63321), (741, 21107)]