128568820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{338339}}^1$

素因数の和:338367

約数の個数: 24

約数和(自身を含む): 284205600

約数和(自身を除く): 155636780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 338339, 676678, 1353356, 1691695, 3383390, 6428441, 6766780, 12856882, 25713764, 32142205, 64284410, 128568820]

約数ペア:

[(1, 128568820), (2, 64284410), (4, 32142205), (5, 25713764), (10, 12856882), (19, 6766780), (20, 6428441), (38, 3383390), (76, 1691695), (95, 1353356), (190, 676678), (380, 338339)]