28308231

素因数分解:

$3^3\times 7^2\times {\mathrm{21397}}^1$

素因数の和:21420

約数の個数: 24

約数和(自身を含む): 48787440

約数和(自身を除く): 20479209

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 21397, 64191, 149779, 192573, 449337, 577719, 1048453, 1348011, 3145359, 4044033, 9436077, 28308231]

約数ペア:

[(1, 28308231), (3, 9436077), (7, 4044033), (9, 3145359), (21, 1348011), (27, 1048453), (49, 577719), (63, 449337), (147, 192573), (189, 149779), (441, 64191), (1323, 21397)]