21452728

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{243781}}^1$

素因数の和:243798

約数の個数: 16

約数和(自身を含む): 43880760

約数和(自身を除く): 22428032

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 243781, 487562, 975124, 1950248, 2681591, 5363182, 10726364, 21452728]

約数ペア:

[(1, 21452728), (2, 10726364), (4, 5363182), (8, 2681591), (11, 1950248), (22, 975124), (44, 487562), (88, 243781)]