20976319

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{353}}^1\times {\mathrm{653}}^1$

素因数の和:1026

約数の個数: 16

約数和(自身を含む): 25929792

約数和(自身を除く): 4953473

約数列:

[1, 7, 13, 91, 353, 653, 2471, 4571, 4589, 8489, 32123, 59423, 230509, 1613563, 2996617, 20976319]

約数ペア:

[(1, 20976319), (7, 2996617), (13, 1613563), (91, 230509), (353, 59423), (653, 32123), (2471, 8489), (4571, 4589)]