18938943

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{487}}^1$

素因数の和:671

約数の個数: 24

約数和(自身を含む): 28548000

約数和(自身を除く): 9609057

約数列:

[1, 3, 9, 29, 87, 149, 261, 447, 487, 1341, 1461, 4321, 4383, 12963, 14123, 38889, 42369, 72563, 127107, 217689, 653067, 2104327, 6312981, 18938943]

約数ペア:

[(1, 18938943), (3, 6312981), (9, 2104327), (29, 653067), (87, 217689), (149, 127107), (261, 72563), (447, 42369), (487, 38889), (1341, 14123), (1461, 12963), (4321, 4383)]