19871316

素因数分解:

$2^2\times 3^2\times {\mathrm{551981}}^1$

素因数の和:551991

約数の個数: 18

約数和(自身を含む): 50230362

約数和(自身を除く): 30359046

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 551981, 1103962, 1655943, 2207924, 3311886, 4967829, 6623772, 9935658, 19871316]

約数ペア:

[(1, 19871316), (2, 9935658), (3, 6623772), (4, 4967829), (6, 3311886), (9, 2207924), (12, 1655943), (18, 1103962), (36, 551981)]