28686681

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{997}}^1$

素因数の和:1165

約数の個数: 24

約数和(自身を含む): 43592640

約数和(自身を除く): 14905959

約数列:

[1, 3, 9, 23, 69, 139, 207, 417, 997, 1251, 2991, 3197, 8973, 9591, 22931, 28773, 68793, 138583, 206379, 415749, 1247247, 3187409, 9562227, 28686681]

約数ペア:

[(1, 28686681), (3, 9562227), (9, 3187409), (23, 1247247), (69, 415749), (139, 206379), (207, 138583), (417, 68793), (997, 28773), (1251, 22931), (2991, 9591), (3197, 8973)]