128220981

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{148921}}^1$

素因数の和:148972

約数の個数: 16

約数和(自身を含む): 200151168

約数和(自身を除く): 71930187

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 148921, 446763, 1042447, 3127341, 6105761, 18317283, 42740327, 128220981]

約数ペア:

[(1, 128220981), (3, 42740327), (7, 18317283), (21, 6105761), (41, 3127341), (123, 1042447), (287, 446763), (861, 148921)]