28403787

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{181}}^2$

素因数の和:399

約数の個数: 18

約数和(自身を含む): 40454004

約数和(自身を除く): 12050217

約数列:

[1, 3, 17, 51, 181, 289, 543, 867, 3077, 9231, 32761, 52309, 98283, 156927, 556937, 1670811, 9467929, 28403787]

約数ペア:

[(1, 28403787), (3, 9467929), (17, 1670811), (51, 556937), (181, 156927), (289, 98283), (543, 52309), (867, 32761), (3077, 9231)]