28605087

素因数分解:

$3^2\times 7^1\times {\mathrm{349}}^1\times {\mathrm{1301}}^1$

素因数の和:1663

約数の個数: 24

約数和(自身を含む): 47392800

約数和(自身を除く): 18787713

約数列:

[1, 3, 7, 9, 21, 63, 349, 1047, 1301, 2443, 3141, 3903, 7329, 9107, 11709, 21987, 27321, 81963, 454049, 1362147, 3178343, 4086441, 9535029, 28605087]

約数ペア:

[(1, 28605087), (3, 9535029), (7, 4086441), (9, 3178343), (21, 1362147), (63, 454049), (349, 81963), (1047, 27321), (1301, 21987), (2443, 11709), (3141, 9107), (3903, 7329)]