677980

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{311}}^1$

素因数の和:429

約数の個数: 24

約数和(自身を含む): 1441440

約数和(自身を除く): 763460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 311, 436, 545, 622, 1090, 1244, 1555, 2180, 3110, 6220, 33899, 67798, 135596, 169495, 338990, 677980]

約数ペア:

[(1, 677980), (2, 338990), (4, 169495), (5, 135596), (10, 67798), (20, 33899), (109, 6220), (218, 3110), (311, 2180), (436, 1555), (545, 1244), (622, 1090)]