6439.000000

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{3917}}^1$

素因数の和:3938

約数の個数: 20

約数和(自身を含む): 1700412

約数和(自身を除く): 885676

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 3917, 7834, 15668, 31336, 50921, 62672, 101842, 203684, 407368, 814736]

約数ペア:

[(1, 814736), (2, 407368), (4, 203684), (8, 101842), (13, 62672), (16, 50921), (26, 31336), (52, 15668), (104, 7834), (208, 3917)]