19897563

素因数分解:

$3^1\times 7^1\times {\mathrm{653}}^1\times {\mathrm{1451}}^1$

素因数の和:2114

約数の個数: 16

約数和(自身を含む): 30387456

約数和(自身を除く): 10489893

約数列:

[1, 3, 7, 21, 653, 1451, 1959, 4353, 4571, 10157, 13713, 30471, 947503, 2842509, 6632521, 19897563]

約数ペア:

[(1, 19897563), (3, 6632521), (7, 2842509), (21, 947503), (653, 30471), (1451, 13713), (1959, 10157), (4353, 4571)]