21040578

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{89917}}^1$

素因数の和:89938

約数の個数: 24

約数和(自身を含む): 49095228

約数和(自身を除く): 28054650

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 89917, 179834, 269751, 539502, 809253, 1168921, 1618506, 2337842, 3506763, 7013526, 10520289, 21040578]

約数ペア:

[(1, 21040578), (2, 10520289), (3, 7013526), (6, 3506763), (9, 2337842), (13, 1618506), (18, 1168921), (26, 809253), (39, 539502), (78, 269751), (117, 179834), (234, 89917)]