21186081

素因数分解:

$3^2\times 7^3\times {\mathrm{6863}}^1$

素因数の和:6890

約数の個数: 24

約数和(自身を含む): 35692800

約数和(自身を除く): 14506719

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 6863, 20589, 48041, 61767, 144123, 336287, 432369, 1008861, 2354009, 3026583, 7062027, 21186081]

約数ペア:

[(1, 21186081), (3, 7062027), (7, 3026583), (9, 2354009), (21, 1008861), (49, 432369), (63, 336287), (147, 144123), (343, 61767), (441, 48041), (1029, 20589), (3087, 6863)]