21000201668

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{487}}^1\times {\mathrm{567389}}^1$

素因数の和:567899

約数の個数: 24

約数和(自身を含む): 38764084800

約数和(自身を除く): 17763883132

約数列:

[1, 2, 4, 19, 38, 76, 487, 974, 1948, 9253, 18506, 37012, 567389, 1134778, 2269556, 10780391, 21560782, 43121564, 276318443, 552636886, 1105273772, 5250050417, 10500100834, 21000201668]

約数ペア:

[(1, 21000201668), (2, 10500100834), (4, 5250050417), (19, 1105273772), (38, 552636886), (76, 276318443), (487, 43121564), (974, 21560782), (1948, 10780391), (9253, 2269556), (18506, 1134778), (37012, 567389)]