12857889

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{20507}}^1$

素因数の和:20540

約数の個数: 16

約数和(自身を含む): 19687680

約数和(自身を除く): 6829791

約数列:

[1, 3, 11, 19, 33, 57, 209, 627, 20507, 61521, 225577, 389633, 676731, 1168899, 4285963, 12857889]

約数ペア:

[(1, 12857889), (3, 4285963), (11, 1168899), (19, 676731), (33, 389633), (57, 225577), (209, 61521), (627, 20507)]