9901221

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{1987}}^1$

素因数の和:2152

約数の個数: 16

約数和(自身を含む): 14504448

約数和(自身を除く): 4603227

約数列:

[1, 3, 11, 33, 151, 453, 1661, 1987, 4983, 5961, 21857, 65571, 300037, 900111, 3300407, 9901221]

約数ペア:

[(1, 9901221), (3, 3300407), (11, 900111), (33, 300037), (151, 65571), (453, 21857), (1661, 5961), (1987, 4983)]