27978853

素因数分解:

$7^4\times {\mathrm{43}}^1\times {\mathrm{271}}^1$

素因数の和:342

約数の個数: 20

約数和(自身を含む): 33522368

約数和(自身を除く): 5543515

約数列:

[1, 7, 43, 49, 271, 301, 343, 1897, 2107, 2401, 11653, 13279, 14749, 81571, 92953, 103243, 570997, 650671, 3996979, 27978853]

約数ペア:

[(1, 27978853), (7, 3996979), (43, 650671), (49, 570997), (271, 103243), (301, 92953), (343, 81571), (1897, 14749), (2107, 13279), (2401, 11653)]