128907191

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{138461}}^1$

素因数の和:138494

約数の個数: 12

約数和(自身を含む): 157846680

約数和(自身を除く): 28939489

約数列:

[1, 7, 19, 49, 133, 931, 138461, 969227, 2630759, 6784589, 18415313, 128907191]

約数ペア:

[(1, 128907191), (7, 18415313), (19, 6784589), (49, 2630759), (133, 969227), (931, 138461)]