81390057

素因数分解:

$3^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{25667}}^1$

素因数の和:25828

約数の個数: 16

約数和(自身を含む): 124849152

約数和(自身を除く): 43459095

約数列:

[1, 3, 7, 21, 151, 453, 1057, 3171, 25667, 77001, 179669, 539007, 3875717, 11627151, 27130019, 81390057]

約数ペア:

[(1, 81390057), (3, 27130019), (7, 11627151), (21, 3875717), (151, 539007), (453, 179669), (1057, 77001), (3171, 25667)]