21979256

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{211339}}^1$

素因数の和:211358

約数の個数: 16

約数和(自身を含む): 44381400

約数和(自身を除く): 22402144

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 211339, 422678, 845356, 1690712, 2747407, 5494814, 10989628, 21979256]

約数ペア:

[(1, 21979256), (2, 10989628), (4, 5494814), (8, 2747407), (13, 1690712), (26, 845356), (52, 422678), (104, 211339)]