21509176

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{206819}}^1$

素因数の和:206838

約数の個数: 16

約数和(自身を含む): 43432200

約数和(自身を除く): 21923024

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 206819, 413638, 827276, 1654552, 2688647, 5377294, 10754588, 21509176]

約数ペア:

[(1, 21509176), (2, 10754588), (4, 5377294), (8, 2688647), (13, 1654552), (26, 827276), (52, 413638), (104, 206819)]