28006979

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{571}}^1$

素因数の和:616

約数の個数: 32

約数和(自身を含む): 38438400

約数和(自身を除く): 10431421

約数列:

[1, 7, 11, 13, 49, 77, 91, 143, 343, 539, 571, 637, 1001, 3773, 3997, 4459, 6281, 7007, 7423, 27979, 43967, 49049, 51961, 81653, 195853, 307769, 363727, 571571, 2154383, 2546089, 4000997, 28006979]

約数ペア:

[(1, 28006979), (7, 4000997), (11, 2546089), (13, 2154383), (49, 571571), (77, 363727), (91, 307769), (143, 195853), (343, 81653), (539, 51961), (571, 49049), (637, 43967), (1001, 27979), (3773, 7423), (3997, 7007), (4459, 6281)]