21000359608

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{61047557}}^1$

素因数の和:61047606

約数の個数: 16

約数和(自身を含む): 40291388280

約数和(自身を除く): 19291028672

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 61047557, 122095114, 244190228, 488380456, 2625044951, 5250089902, 10500179804, 21000359608]

約数ペア:

[(1, 21000359608), (2, 10500179804), (4, 5250089902), (8, 2625044951), (43, 488380456), (86, 244190228), (172, 122095114), (344, 61047557)]