200720709

素因数分解:

$3^2\times 7^2\times {\mathrm{455149}}^1$

素因数の和:455169

約数の個数: 18

約数和(自身を含む): 337266150

約数和(自身を除く): 136545441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 455149, 1365447, 3186043, 4096341, 9558129, 22302301, 28674387, 66906903, 200720709]

約数ペア:

[(1, 200720709), (3, 66906903), (7, 28674387), (9, 22302301), (21, 9558129), (49, 4096341), (63, 3186043), (147, 1365447), (441, 455149)]