28723689

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{569}}^1$

素因数の和:725

約数の個数: 24

約数和(自身を含む): 42681600

約数和(自身を除く): 13957911

約数列:

[1, 3, 9, 71, 79, 213, 237, 569, 639, 711, 1707, 5121, 5609, 16827, 40399, 44951, 50481, 121197, 134853, 363591, 404559, 3191521, 9574563, 28723689]

約数ペア:

[(1, 28723689), (3, 9574563), (9, 3191521), (71, 404559), (79, 363591), (213, 134853), (237, 121197), (569, 50481), (639, 44951), (711, 40399), (1707, 16827), (5121, 5609)]