27720847

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{521}}^1\times {\mathrm{691}}^1$

素因数の和:1230

約数の個数: 16

約数和(自身を含む): 34677504

約数和(自身を除く): 6956657

約数列:

[1, 7, 11, 77, 521, 691, 3647, 4837, 5731, 7601, 40117, 53207, 360011, 2520077, 3960121, 27720847]

約数ペア:

[(1, 27720847), (7, 3960121), (11, 2520077), (77, 360011), (521, 53207), (691, 40117), (3647, 7601), (4837, 5731)]