19728561

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1\times {\mathrm{977}}^1$

素因数の和:1160

約数の個数: 16

約数和(自身を含む): 27039744

約数和(自身を除く): 7311183

約数列:

[1, 3, 53, 127, 159, 381, 977, 2931, 6731, 20193, 51781, 124079, 155343, 372237, 6576187, 19728561]

約数ペア:

[(1, 19728561), (3, 6576187), (53, 372237), (127, 155343), (159, 124079), (381, 51781), (977, 20193), (2931, 6731)]