21055173

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{521}}^1\times {\mathrm{709}}^1$

素因数の和:1252

約数の個数: 16

約数和(自身を含む): 29649600

約数和(自身を除く): 8594427

約数列:

[1, 3, 19, 57, 521, 709, 1563, 2127, 9899, 13471, 29697, 40413, 369389, 1108167, 7018391, 21055173]

約数ペア:

[(1, 21055173), (3, 7018391), (19, 1108167), (57, 369389), (521, 40413), (709, 29697), (1563, 13471), (2127, 9899)]