28906780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{206477}}^1$

素因数の和:206493

約数の個数: 24

約数和(自身を含む): 69376608

約数和(自身を除く): 40469828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 206477, 412954, 825908, 1032385, 1445339, 2064770, 2890678, 4129540, 5781356, 7226695, 14453390, 28906780]

約数ペア:

[(1, 28906780), (2, 14453390), (4, 7226695), (5, 5781356), (7, 4129540), (10, 2890678), (14, 2064770), (20, 1445339), (28, 1032385), (35, 825908), (70, 412954), (140, 206477)]