84040280

素因数分解:

$2^3\times 5^1\times {\mathrm{2101007}}^1$

素因数の和:2101018

約数の個数: 16

約数和(自身を含む): 189090720

約数和(自身を除く): 105050440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2101007, 4202014, 8404028, 10505035, 16808056, 21010070, 42020140, 84040280]

約数ペア:

[(1, 84040280), (2, 42020140), (4, 21010070), (5, 16808056), (8, 10505035), (10, 8404028), (20, 4202014), (40, 2101007)]