18742787

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{727}}^1$

素因数の和:890

約数の個数: 16

約数和(自身を含む): 22364160

約数和(自身を除く): 3621373

約数列:

[1, 7, 29, 127, 203, 727, 889, 3683, 5089, 21083, 25781, 92329, 147581, 646303, 2677541, 18742787]

約数ペア:

[(1, 18742787), (7, 2677541), (29, 646303), (127, 147581), (203, 92329), (727, 25781), (889, 21083), (3683, 5089)]