28704249

素因数分解:

$3^2\times 7^2\times {\mathrm{65089}}^1$

素因数の和:65109

約数の個数: 18

約数和(自身を含む): 48231690

約数和(自身を除く): 19527441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 65089, 195267, 455623, 585801, 1366869, 3189361, 4100607, 9568083, 28704249]

約数ペア:

[(1, 28704249), (3, 9568083), (7, 4100607), (9, 3189361), (21, 1366869), (49, 585801), (63, 455623), (147, 195267), (441, 65089)]