2978269

素因数分解:

$7^3\times {\mathrm{19}}^1\times {\mathrm{457}}^1$

素因数の和:497

約数の個数: 16

約数和(自身を含む): 3664000

約数和(自身を除く): 685731

約数列:

[1, 7, 19, 49, 133, 343, 457, 931, 3199, 6517, 8683, 22393, 60781, 156751, 425467, 2978269]

約数ペア:

[(1, 2978269), (7, 425467), (19, 156751), (49, 60781), (133, 22393), (343, 8683), (457, 6517), (931, 3199)]