128523717

素因数分解:

$3^2\times 7^2\times {\mathrm{291437}}^1$

素因数の和:291457

約数の個数: 18

約数和(自身を含む): 215955558

約数和(自身を除く): 87431841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 291437, 874311, 2040059, 2622933, 6120177, 14280413, 18360531, 42841239, 128523717]

約数ペア:

[(1, 128523717), (3, 42841239), (7, 18360531), (9, 14280413), (21, 6120177), (49, 2622933), (63, 2040059), (147, 874311), (441, 291437)]