28312275

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{8779}}^1$

素因数の和:8835

約数の個数: 24

約数和(自身を含む): 47903680

約数和(自身を除く): 19591405

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 8779, 26337, 43895, 131685, 219475, 377497, 658425, 1132491, 1887485, 5662455, 9437425, 28312275]

約数ペア:

[(1, 28312275), (3, 9437425), (5, 5662455), (15, 1887485), (25, 1132491), (43, 658425), (75, 377497), (129, 219475), (215, 131685), (645, 43895), (1075, 26337), (3225, 8779)]