16509987

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{15679}}^1$

素因数の和:15704

約数の個数: 20

約数和(自身を含む): 26561920

約数和(自身を除く): 10051933

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 15679, 47037, 141111, 203827, 423333, 611481, 1269999, 1834443, 5503329, 16509987]

約数ペア:

[(1, 16509987), (3, 5503329), (9, 1834443), (13, 1269999), (27, 611481), (39, 423333), (81, 203827), (117, 141111), (351, 47037), (1053, 15679)]