21554559

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{61409}}^1$

素因数の和:61431

約数の個数: 16

約数和(自身を含む): 34389600

約数和(自身を除く): 12835041

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 61409, 184227, 552681, 798317, 1658043, 2394951, 7184853, 21554559]

約数ペア:

[(1, 21554559), (3, 7184853), (9, 2394951), (13, 1658043), (27, 798317), (39, 552681), (117, 184227), (351, 61409)]