18896991

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{757}}^1$

素因数の和:970

約数の個数: 16

約数和(自身を含む): 25869024

約数和(自身を除く): 6972033

約数列:

[1, 3, 53, 157, 159, 471, 757, 2271, 8321, 24963, 40121, 118849, 120363, 356547, 6298997, 18896991]

約数ペア:

[(1, 18896991), (3, 6298997), (53, 356547), (157, 120363), (159, 118849), (471, 40121), (757, 24963), (2271, 8321)]