9120321

素因数分解:

$3^2\times 7^2\times {\mathrm{20681}}^1$

素因数の和:20701

約数の個数: 18

約数和(自身を含む): 15325362

約数和(自身を除く): 6205041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 20681, 62043, 144767, 186129, 434301, 1013369, 1302903, 3040107, 9120321]

約数ペア:

[(1, 9120321), (3, 3040107), (7, 1302903), (9, 1013369), (21, 434301), (49, 186129), (63, 144767), (147, 62043), (441, 20681)]