21831368

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{209917}}^1$

素因数の和:209936

約数の個数: 16

約数和(自身を含む): 44082780

約数和(自身を除く): 22251412

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 209917, 419834, 839668, 1679336, 2728921, 5457842, 10915684, 21831368]

約数ペア:

[(1, 21831368), (2, 10915684), (4, 5457842), (8, 2728921), (13, 1679336), (26, 839668), (52, 419834), (104, 209917)]