21305048

素因数分解:

$2^3\times {\mathrm{1091}}^1\times {\mathrm{2441}}^1$

素因数の和:3538

約数の個数: 16

約数和(自身を含む): 39999960

約数和(自身を除く): 18694912

約数列:

[1, 2, 4, 8, 1091, 2182, 2441, 4364, 4882, 8728, 9764, 19528, 2663131, 5326262, 10652524, 21305048]

約数ペア:

[(1, 21305048), (2, 10652524), (4, 5326262), (8, 2663131), (1091, 19528), (2182, 9764), (2441, 8728), (4364, 4882)]