21318885

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{67679}}^1$

素因数の和:67697

約数の個数: 24

約数和(自身を含む): 42232320

約数和(自身を除く): 20913435

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 67679, 203037, 338395, 473753, 609111, 1015185, 1421259, 2368765, 3045555, 4263777, 7106295, 21318885]

約数ペア:

[(1, 21318885), (3, 7106295), (5, 4263777), (7, 3045555), (9, 2368765), (15, 1421259), (21, 1015185), (35, 609111), (45, 473753), (63, 338395), (105, 203037), (315, 67679)]