19681623

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{18691}}^1$

素因数の和:18716

約数の個数: 20

約数和(自身を含む): 31664248

約数和(自身を除く): 11982625

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 18691, 56073, 168219, 242983, 504657, 728949, 1513971, 2186847, 6560541, 19681623]

約数ペア:

[(1, 19681623), (3, 6560541), (9, 2186847), (13, 1513971), (27, 728949), (39, 504657), (81, 242983), (117, 168219), (351, 56073), (1053, 18691)]