639730945

素因数分解:

$5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{257437}}^1$

素因数の和:257520

約数の個数: 16

約数和(自身を含む): 889705728

約数和(自身を除く): 249974783

約数列:

[1, 5, 7, 35, 71, 355, 497, 2485, 257437, 1287185, 1802059, 9010295, 18278027, 91390135, 127946189, 639730945]

約数ペア:

[(1, 639730945), (5, 127946189), (7, 91390135), (35, 18278027), (71, 9010295), (355, 1802059), (497, 1287185), (2485, 257437)]