66538521

素因数分解:

$3^2\times 7^2\times {\mathrm{150881}}^1$

素因数の和:150901

約数の個数: 18

約数和(自身を含む): 111803562

約数和(自身を除く): 45265041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 150881, 452643, 1056167, 1357929, 3168501, 7393169, 9505503, 22179507, 66538521]

約数ペア:

[(1, 66538521), (3, 22179507), (7, 9505503), (9, 7393169), (21, 3168501), (49, 1357929), (63, 1056167), (147, 452643), (441, 150881)]