21508245

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43451}}^1$

素因数の和:43473

約数の個数: 24

約数和(自身を含む): 40671072

約数和(自身を除く): 19162827

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 43451, 130353, 217255, 391059, 477961, 651765, 1433883, 1955295, 2389805, 4301649, 7169415, 21508245]

約数ペア:

[(1, 21508245), (3, 7169415), (5, 4301649), (9, 2389805), (11, 1955295), (15, 1433883), (33, 651765), (45, 477961), (55, 391059), (99, 217255), (165, 130353), (495, 43451)]