20847883

素因数分解:

$7^4\times {\mathrm{19}}^1\times {\mathrm{457}}^1$

素因数の和:504

約数の個数: 20

約数和(自身を含む): 25657160

約数和(自身を除く): 4809277

約数列:

[1, 7, 19, 49, 133, 343, 457, 931, 2401, 3199, 6517, 8683, 22393, 45619, 60781, 156751, 425467, 1097257, 2978269, 20847883]

約数ペア:

[(1, 20847883), (7, 2978269), (19, 1097257), (49, 425467), (133, 156751), (343, 60781), (457, 45619), (931, 22393), (2401, 8683), (3199, 6517)]