128412921

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{10939}}^1$

素因数の和:11005

約数の個数: 32

約数和(自身を含む): 215649280

約数和(自身を除く): 87236359

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1677, 3913, 10939, 11739, 32817, 76573, 142207, 229719, 426621, 470377, 995449, 1411131, 2986347, 3292639, 6114901, 9877917, 18344703, 42804307, 128412921]

約数ペア:

[(1, 128412921), (3, 42804307), (7, 18344703), (13, 9877917), (21, 6114901), (39, 3292639), (43, 2986347), (91, 1411131), (129, 995449), (273, 470377), (301, 426621), (559, 229719), (903, 142207), (1677, 76573), (3913, 32817), (10939, 11739)]