20648155

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{19759}}^1$

素因数の和:19794

約数の個数: 16

約数和(自身を含む): 28454400

約数和(自身を除く): 7806245

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 19759, 98795, 217349, 375421, 1086745, 1877105, 4129631, 20648155]

約数ペア:

[(1, 20648155), (5, 4129631), (11, 1877105), (19, 1086745), (55, 375421), (95, 217349), (209, 98795), (1045, 19759)]