28639161

素因数分解:

$3^2\times {\mathrm{43}}^2\times {\mathrm{1721}}^1$

素因数の和:1813

約数の個数: 18

約数和(自身を含む): 42376698

約数和(自身を除く): 13737537

約数列:

[1, 3, 9, 43, 129, 387, 1721, 1849, 5163, 5547, 15489, 16641, 74003, 222009, 666027, 3182129, 9546387, 28639161]

約数ペア:

[(1, 28639161), (3, 9546387), (9, 3182129), (43, 666027), (129, 222009), (387, 74003), (1721, 16641), (1849, 15489), (5163, 5547)]