21090537

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{20029}}^1$

素因数の和:20054

約数の個数: 20

約数和(自身を含む): 33930820

約数和(自身を除く): 12840283

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 20029, 60087, 180261, 260377, 540783, 781131, 1622349, 2343393, 7030179, 21090537]

約数ペア:

[(1, 21090537), (3, 7030179), (9, 2343393), (13, 1622349), (27, 781131), (39, 540783), (81, 260377), (117, 180261), (351, 60087), (1053, 20029)]