66891321

素因数分解:

$3^2\times 7^2\times {\mathrm{151681}}^1$

素因数の和:151701

約数の個数: 18

約数和(自身を含む): 112396362

約数和(自身を除く): 45505041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 151681, 455043, 1061767, 1365129, 3185301, 7432369, 9555903, 22297107, 66891321]

約数ペア:

[(1, 66891321), (3, 22297107), (7, 9555903), (9, 7432369), (21, 3185301), (49, 1365129), (63, 1061767), (147, 455043), (441, 151681)]