128304820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{916463}}^1$

素因数の和:916479

約数の個数: 24

約数和(自身を含む): 307931904

約数和(自身を除く): 179627084

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 916463, 1832926, 3665852, 4582315, 6415241, 9164630, 12830482, 18329260, 25660964, 32076205, 64152410, 128304820]

約数ペア:

[(1, 128304820), (2, 64152410), (4, 32076205), (5, 25660964), (7, 18329260), (10, 12830482), (14, 9164630), (20, 6415241), (28, 4582315), (35, 3665852), (70, 1832926), (140, 916463)]