218564985

素因数分解:

$3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{111229}}^1$

素因数の和:111368

約数の個数: 16

約数和(自身を含む): 352376640

約数和(自身を除く): 133811655

約数列:

[1, 3, 5, 15, 131, 393, 655, 1965, 111229, 333687, 556145, 1668435, 14570999, 43712997, 72854995, 218564985]

約数ペア:

[(1, 218564985), (3, 72854995), (5, 43712997), (15, 14570999), (131, 1668435), (393, 556145), (655, 333687), (1965, 111229)]