20683711280

素因数分解:

$2^4\times 5^1\times {\mathrm{269}}^1\times {\mathrm{961139}}^1$

素因数の和:961421

約数の個数: 40

約数和(自身を含む): 48268450800

約数和(自身を除く): 27584739520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 269, 538, 1076, 1345, 2152, 2690, 4304, 5380, 10760, 21520, 961139, 1922278, 3844556, 4805695, 7689112, 9611390, 15378224, 19222780, 38445560, 76891120, 258546391, 517092782, 1034185564, 1292731955, 2068371128, 2585463910, 4136742256, 5170927820, 10341855640, 20683711280]

約数ペア:

[(1, 20683711280), (2, 10341855640), (4, 5170927820), (5, 4136742256), (8, 2585463910), (10, 2068371128), (16, 1292731955), (20, 1034185564), (40, 517092782), (80, 258546391), (269, 76891120), (538, 38445560), (1076, 19222780), (1345, 15378224), (2152, 9611390), (2690, 7689112), (4304, 4805695), (5380, 3844556), (10760, 1922278), (21520, 961139)]