28986815

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{571}}^1$

素因数の和:671

約数の個数: 32

約数和(自身を含む): 41513472

約数和(自身を除く): 12526657

約数列:

[1, 5, 11, 13, 55, 65, 71, 143, 355, 571, 715, 781, 923, 2855, 3905, 4615, 6281, 7423, 10153, 31405, 37115, 40541, 50765, 81653, 202705, 408265, 445951, 527033, 2229755, 2635165, 5797363, 28986815]

約数ペア:

[(1, 28986815), (5, 5797363), (11, 2635165), (13, 2229755), (55, 527033), (65, 445951), (71, 408265), (143, 202705), (355, 81653), (571, 50765), (715, 40541), (781, 37115), (923, 31405), (2855, 10153), (3905, 7423), (4615, 6281)]