20728645

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{12601}}^1$

素因数の和:12660

約数の個数: 16

約数和(自身を含む): 29035008

約数和(自身を除く): 8306363

約数列:

[1, 5, 7, 35, 47, 235, 329, 1645, 12601, 63005, 88207, 441035, 592247, 2961235, 4145729, 20728645]

約数ペア:

[(1, 20728645), (5, 4145729), (7, 2961235), (35, 592247), (47, 441035), (235, 88207), (329, 63005), (1645, 12601)]