18987952

素因数分解:

$2^4\times {\mathrm{491}}^1\times {\mathrm{2417}}^1$

素因数の和:2916

約数の個数: 20

約数和(自身を含む): 36879336

約数和(自身を除く): 17891384

約数列:

[1, 2, 4, 8, 16, 491, 982, 1964, 2417, 3928, 4834, 7856, 9668, 19336, 38672, 1186747, 2373494, 4746988, 9493976, 18987952]

約数ペア:

[(1, 18987952), (2, 9493976), (4, 4746988), (8, 2373494), (16, 1186747), (491, 38672), (982, 19336), (1964, 9668), (2417, 7856), (3928, 4834)]