21081788

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{57917}}^1$

素因数の和:57941

約数の個数: 24

約数和(自身を含む): 45407712

約数和(自身を除く): 24325924

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 364, 57917, 115834, 231668, 405419, 752921, 810838, 1505842, 1621676, 3011684, 5270447, 10540894, 21081788]

約数ペア:

[(1, 21081788), (2, 10540894), (4, 5270447), (7, 3011684), (13, 1621676), (14, 1505842), (26, 810838), (28, 752921), (52, 405419), (91, 231668), (182, 115834), (364, 57917)]