21787218

素因数分解:

$2^1\times 3^4\times {\mathrm{134489}}^1$

素因数の和:134503

約数の個数: 20

約数和(自身を含む): 48819870

約数和(自身を除く): 27032652

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 134489, 268978, 403467, 806934, 1210401, 2420802, 3631203, 7262406, 10893609, 21787218]

約数ペア:

[(1, 21787218), (2, 10893609), (3, 7262406), (6, 3631203), (9, 2420802), (18, 1210401), (27, 806934), (54, 403467), (81, 268978), (162, 134489)]