28509873

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{9767}}^1$

素因数の和:9916

約数の個数: 16

約数和(自身を含む): 43760640

約数和(自身を除く): 15250767

約数列:

[1, 3, 7, 21, 139, 417, 973, 2919, 9767, 29301, 68369, 205107, 1357613, 4072839, 9503291, 28509873]

約数ペア:

[(1, 28509873), (3, 9503291), (7, 4072839), (21, 1357613), (139, 205107), (417, 68369), (973, 29301), (2919, 9767)]