638085978

素因数分解:

$2^1\times 3^3\times {\mathrm{11816407}}^1$

素因数の和:11816418

約数の個数: 16

約数和(自身を含む): 1417968960

約数和(自身を除く): 779882982

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 11816407, 23632814, 35449221, 70898442, 106347663, 212695326, 319042989, 638085978]

約数ペア:

[(1, 638085978), (2, 319042989), (3, 212695326), (6, 106347663), (9, 70898442), (18, 35449221), (27, 23632814), (54, 11816407)]