40187889

素因数分解:

$3^2\times 7^2\times {\mathrm{91129}}^1$

素因数の和:91149

約数の個数: 18

約数和(自身を含む): 67527330

約数和(自身を除く): 27339441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 91129, 273387, 637903, 820161, 1913709, 4465321, 5741127, 13395963, 40187889]

約数ペア:

[(1, 40187889), (3, 13395963), (7, 5741127), (9, 4465321), (21, 1913709), (49, 820161), (63, 637903), (147, 273387), (441, 91129)]