19716021

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{56171}}^1$

素因数の和:56193

約数の個数: 16

約数和(自身を含む): 31456320

約数和(自身を除く): 11740299

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 56171, 168513, 505539, 730223, 1516617, 2190669, 6572007, 19716021]

約数ペア:

[(1, 19716021), (3, 6572007), (9, 2190669), (13, 1516617), (27, 730223), (39, 505539), (117, 168513), (351, 56171)]