640535231

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{145477}}^1$

素因数の和:145538

約数の個数: 16

約数和(自身を含む): 796055616

約数和(自身を除く): 155520385

約数列:

[1, 7, 17, 37, 119, 259, 629, 4403, 145477, 1018339, 2473109, 5382649, 17311763, 37678543, 91505033, 640535231]

約数ペア:

[(1, 640535231), (7, 91505033), (17, 37678543), (37, 17311763), (119, 5382649), (259, 2473109), (629, 1018339), (4403, 145477)]