638567894

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{1151}}^1\times {\mathrm{3907}}^1$

素因数の和:5131

約数の個数: 16

約数和(自身を含む): 972435456

約数和(自身を除く): 333867562

約数列:

[1, 2, 71, 142, 1151, 2302, 3907, 7814, 81721, 163442, 277397, 554794, 4496957, 8993914, 319283947, 638567894]

約数ペア:

[(1, 638567894), (2, 319283947), (71, 8993914), (142, 4496957), (1151, 554794), (2302, 277397), (3907, 163442), (7814, 81721)]