20409717

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{5581}}^1$

素因数の和:5660

約数の個数: 16

約数和(自身を含む): 28937088

約数和(自身を除く): 8527371

約数列:

[1, 3, 23, 53, 69, 159, 1219, 3657, 5581, 16743, 128363, 295793, 385089, 887379, 6803239, 20409717]

約数ペア:

[(1, 20409717), (3, 6803239), (23, 887379), (53, 385089), (69, 295793), (159, 128363), (1219, 16743), (3657, 5581)]