21395385

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43223}}^1$

素因数の和:43245

約数の個数: 24

約数和(自身を含む): 40457664

約数和(自身を除く): 19062279

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 43223, 129669, 216115, 389007, 475453, 648345, 1426359, 1945035, 2377265, 4279077, 7131795, 21395385]

約数ペア:

[(1, 21395385), (3, 7131795), (5, 4279077), (9, 2377265), (11, 1945035), (15, 1426359), (33, 648345), (45, 475453), (55, 389007), (99, 216115), (165, 129669), (495, 43223)]